90856752709255 has 32 divisors (see below), whose sum is σ = 117698034101760. Its totient is φ = 66932426856960.

The previous prime is 90856752709213. The next prime is 90856752709259. The reversal of 90856752709255 is 55290725765809.

It is not a de Polignac number, because 90856752709255 - 2³¹ = 90854605225607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90856752709259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1179475081 + ... + 1179552109.

It is an arithmetic number, because the mean of its divisors is an integer number (3678063565680).

Almost surely, 2^{90856752709255} is an apocalyptic number.

90856752709255 is a deficient number, since it is larger than the sum of its proper divisors (26841281392505).

90856752709255 is a wasteful number, since it uses less digits than its factorization.

90856752709255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120571.

The product of its (nonzero) digits is 476280000, while the sum is 70.

The spelling of 90856752709255 in words is "ninety trillion, eight hundred fifty-six billion, seven hundred fifty-two million, seven hundred nine thousand, two hundred fifty-five".