90400942755 has 64 divisors (see below), whose sum is σ = 172217041920. Its totient is φ = 44830914048.

The previous prime is 90400942717. The next prime is 90400942811. The reversal of 90400942755 is 55724900409.

90400942755 is a `hidden beast` number, since 90 + 400 + 94 + 2 + 75 + 5 = 666.

It is not a de Polignac number, because 90400942755 - 2⁶ = 90400942691 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 90400942755.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46807 + ... + 427776.

It is an arithmetic number, because the mean of its divisors is an integer number (2690891280).

Almost surely, 2^90400942755 is an apocalyptic number.

90400942755 is a deficient number, since it is larger than the sum of its proper divisors (81816099165).

90400942755 is a wasteful number, since it uses less digits than its factorization.

90400942755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474697 (or 474691 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 90400942755 in words is "ninety billion, four hundred million, nine hundred forty-two thousand, seven hundred fifty-five".