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155142241550 = 252231131111927
BaseRepresentation
bin1001000001111100110…
…0101011110100001110
3112211110010111110011022
42100133030223310032
510020212403212200
6155134340354142
714131366203062
oct2203714536416
9484403443138
10155142241550
115a88282935a
12260989a5952
1311825a2173a
14771a6bbaa2
154080281885
hex241f32bd0e

155142241550 has 48 divisors (see below), whose sum is σ = 301162724352. Its totient is φ = 59348546400.

The previous prime is 155142241549. The next prime is 155142241567. The reversal of 155142241550 is 55142241551.

155142241550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1551422415502 (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155142241550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13001687 + ... + 13013613.

It is an arithmetic number, because the mean of its divisors is an integer number (6274223424).

Almost surely, 2155142241550 is an apocalyptic number.

155142241550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155142241550 is a deficient number, since it is larger than the sum of its proper divisors (146020482802).

155142241550 is a wasteful number, since it uses less digits than its factorization.

155142241550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23273 (or 23268 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 35.

Subtracting from 155142241550 its reverse (55142241551), we obtain a palindrome (99999999999).

The spelling of 155142241550 in words is "one hundred fifty-five billion, one hundred forty-two million, two hundred forty-one thousand, five hundred fifty".

Divisors: 1 2 5 10 23 25 46 50 115 230 575 1150 11311 11927 22622 23854 56555 59635 113110 119270 260153 274321 282775 298175 520306 548642 565550 596350 1300765 1371605 2601530 2743210 6503825 6858025 13007650 13716050 134906297 269812594 674531485 1349062970 3102844831 3372657425 6205689662 6745314850 15514224155 31028448310 77571120775 155142241550