255165810615 has 48 divisors (see below), whose sum is σ = 443514603168. Its totient is φ = 135711203328.

The previous prime is 255165810593. The next prime is 255165810629. The reversal of 255165810615 is 516018561552.

255165810615 is a `hidden beast` number, since 2 + 5 + 5 + 1 + 6 + 581 + 0 + 61 + 5 = 666.

It is not a de Polignac number, because 255165810615 - 2¹⁴ = 255165794231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56613192 + ... + 56617698.

It is an arithmetic number, because the mean of its divisors is an integer number (9239887566).

Almost surely, 2^255165810615 is an apocalyptic number.

255165810615 is a deficient number, since it is larger than the sum of its proper divisors (188348792553).

255165810615 is a wasteful number, since it uses less digits than its factorization.

255165810615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7728 (or 7725 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 45.

The spelling of 255165810615 in words is "two hundred fifty-five billion, one hundred sixty-five million, eight hundred ten thousand, six hundred fifteen".