265311178656255 has 24 divisors (see below), whose sum is σ = 472301701827072. Its totient is φ = 137674990004544.

The previous prime is 265311178656239. The next prime is 265311178656301. The reversal of 265311178656255 is 552656871113562.

265311178656255 is a `hidden beast` number, since 2 + 6 + 5 + 3 + 1 + 1 + 17 + 8 + 6 + 562 + 55 = 666.

It is not a de Polignac number, because 265311178656255 - 2⁴ = 265311178656239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 265311178656192 and 265311178656201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79673024959 + ... + 79673028288.

It is an arithmetic number, because the mean of its divisors is an integer number (19679237576128).

Almost surely, 2^{265311178656255} is an apocalyptic number.

265311178656255 is a deficient number, since it is larger than the sum of its proper divisors (206990523170817).

265311178656255 is a wasteful number, since it uses less digits than its factorization.

265311178656255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159346053295 (or 159346053292 counting only the distinct ones).

The product of its digits is 90720000, while the sum is 63.

The spelling of 265311178656255 in words is "two hundred sixty-five trillion, three hundred eleven billion, one hundred seventy-eight million, six hundred fifty-six thousand, two hundred fifty-five".