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2155434243344 = 242919923343379
BaseRepresentation
bin11111010111011001111…
…001000111010100010000
321122001112220210112021122
4133113121321013110100
5240303312131241334
64330105352141412
7311503445526254
oct37273171072420
97561486715248
102155434243344
11761129490438
122a98a2697868
13128344913225
1476475c5c264
153b103bdd32e
hex1f5d9e47510

2155434243344 has 40 divisors (see below), whose sum is σ = 4341868680000. Its totient is φ = 1035325501056.

The previous prime is 2155434243283. The next prime is 2155434243371. The reversal of 2155434243344 is 4433424345512.

It is a super-3 number, since 3×21554342433443 (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2155434243295 and 2155434243304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11579354 + ... + 11764025.

It is an arithmetic number, because the mean of its divisors is an integer number (108546717000).

Almost surely, 22155434243344 is an apocalyptic number.

It is an amenable number.

2155434243344 is an abundant number, since it is smaller than the sum of its proper divisors (2186434436656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155434243344 is a wasteful number, since it uses less digits than its factorization.

2155434243344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23343615 (or 23343609 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 44.

Adding to 2155434243344 its reverse (4433424345512), we get a palindrome (6588858588856).

The spelling of 2155434243344 in words is "two trillion, one hundred fifty-five billion, four hundred thirty-four million, two hundred forty-three thousand, three hundred forty-four".

Divisors: 1 2 4 8 16 29 58 116 199 232 398 464 796 1592 3184 5771 11542 23084 46168 92336 23343379 46686758 93373516 186747032 373494064 676957991 1353915982 2707831964 4645332421 5415663928 9290664842 10831327856 18581329684 37162659368 74325318736 134714640209 269429280418 538858560836 1077717121672 2155434243344