90615853936 has 40 divisors (see below), whose sum is σ = 176230376784. Its totient is φ = 45137203200.

The previous prime is 90615853931. The next prime is 90615853961. The reversal of 90615853936 is 63935851609.

It is a happy number.

It is a super-2 number, since 2×90615853936² (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 (90615853931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13519386 + ... + 13526086.

Almost surely, 2^90615853936 is an apocalyptic number.

It is an amenable number.

90615853936 is a deficient number, since it is larger than the sum of its proper divisors (85614522848).

90615853936 is a wasteful number, since it uses less digits than its factorization.

90615853936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9769 (or 9763 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 55.

The spelling of 90615853936 in words is "ninety billion, six hundred fifteen million, eight hundred fifty-three thousand, nine hundred thirty-six".