90140616656 has 80 divisors (see below), whose sum is σ = 181225900800. Its totient is φ = 43410491904.

The previous prime is 90140616641. The next prime is 90140616697. The reversal of 90140616656 is 65661604109.

It is a super-2 number, since 2×90140616656² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11987810 + ... + 11995326.

It is an arithmetic number, because the mean of its divisors is an integer number (2265323760).

Almost surely, 2^90140616656 is an apocalyptic number.

It is an amenable number.

90140616656 is an abundant number, since it is smaller than the sum of its proper divisors (91085284144).

90140616656 is a wasteful number, since it uses less digits than its factorization.

90140616656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7836 (or 7830 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 90140616656 in words is "ninety billion, one hundred forty million, six hundred sixteen thousand, six hundred fifty-six".