90854277631 has 16 divisors (see below), whose sum is σ = 100527100128. Its totient is φ = 81577036800.

The previous prime is 90854277587. The next prime is 90854277659. The reversal of 90854277631 is 13677245809.

It is a cyclic number.

It is not a de Polignac number, because 90854277631 - 2¹⁵ = 90854244863 is a prime.

It is a super-2 number, since 2×90854277631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90854277431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73285 + ... + 432526.

It is an arithmetic number, because the mean of its divisors is an integer number (6282943758).

It is a 1-persistent number, because it is pandigital, but 2⋅90854277631 = 181708555262 is not.

Almost surely, 2^90854277631 is an apocalyptic number.

90854277631 is a deficient number, since it is larger than the sum of its proper divisors (9672822497).

90854277631 is a wasteful number, since it uses less digits than its factorization.

90854277631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506202.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 90854277631 in words is "ninety billion, eight hundred fifty-four million, two hundred seventy-seven thousand, six hundred thirty-one".