90975012431 has 16 divisors (see below), whose sum is σ = 97510640640. Its totient is φ = 84624730560.

The previous prime is 90975012407. The next prime is 90975012437. The reversal of 90975012431 is 13421057909.

It is a cyclic number.

It is not a de Polignac number, because 90975012431 - 2¹⁸ = 90974750287 is a prime.

It is a super-2 number, since 2×90975012431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90975012437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162236 + ... + 456366.

It is an arithmetic number, because the mean of its divisors is an integer number (6094415040).

Almost surely, 2^90975012431 is an apocalyptic number.

90975012431 is a deficient number, since it is larger than the sum of its proper divisors (6535628209).

90975012431 is a wasteful number, since it uses less digits than its factorization.

90975012431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294446.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 90975012431 in words is "ninety billion, nine hundred seventy-five million, twelve thousand, four hundred thirty-one".