Search a number
-
+
245401404255143 = 1311873293162253
BaseRepresentation
bin110111110011000011110111…
…100001110010101110100111
31012011220010220210121010012122
4313303003313201302232213
5224131124033442131033
62225531503200340155
7102455444365122023
oct6763036741625647
91164803823533178
10245401404255143
1171213173111a14
122363452991465b
13a6c133a167426
1444856c4347383
151d586c130ba98
hexdf30f7872ba7

245401404255143 has 4 divisors (see below), whose sum is σ = 247274697417528. Its totient is φ = 243528111092760.

The previous prime is 245401404255097. The next prime is 245401404255157. The reversal of 245401404255143 is 341552404104542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245401404255143 - 220 = 245401403206567 is a prime.

It is a super-2 number, since 2×2454014042551432 (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245401404255094 and 245401404255103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245401404255043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 936646580996 + ... + 936646581257.

It is an arithmetic number, because the mean of its divisors is an integer number (61818674354382).

Almost surely, 2245401404255143 is an apocalyptic number.

245401404255143 is a deficient number, since it is larger than the sum of its proper divisors (1873293162385).

245401404255143 is a wasteful number, since it uses less digits than its factorization.

245401404255143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873293162384.

The product of its (nonzero) digits is 1536000, while the sum is 44.

Adding to 245401404255143 its reverse (341552404104542), we get a palindrome (586953808359685).

The spelling of 245401404255143 in words is "two hundred forty-five trillion, four hundred one billion, four hundred four million, two hundred fifty-five thousand, one hundred forty-three".

Divisors: 1 131 1873293162253 245401404255143