90436637412 has 72 divisors (see below), whose sum is σ = 249476703840. Its totient is φ = 27395061120.

The previous prime is 90436637387. The next prime is 90436637413. The reversal of 90436637412 is 21473663409.

90436637412 is a `hidden beast` number, since 9 + 0 + 4 + 3 + 6 + 637 + 4 + 1 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (90436637413) 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 23 ways as a sum of consecutive naturals, for example, 1085664 + ... + 1165992.

It is an arithmetic number, because the mean of its divisors is an integer number (3464954220).

Almost surely, 2^90436637412 is an apocalyptic number.

It is an amenable number.

90436637412 is an abundant number, since it is smaller than the sum of its proper divisors (159040066428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90436637412 is a wasteful number, since it uses less digits than its factorization.

90436637412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83193 (or 83188 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 90436637412 in words is "ninety billion, four hundred thirty-six million, six hundred thirty-seven thousand, four hundred twelve".