90386749712 has 20 divisors (see below), whose sum is σ = 200142088896. Its totient is φ = 38737178400.

The previous prime is 90386749679. The next prime is 90386749781. The reversal of 90386749712 is 21794768309.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403512164 + ... + 403512387.

Almost surely, 2^90386749712 is an apocalyptic number.

It is an amenable number.

90386749712 is an abundant number, since it is smaller than the sum of its proper divisors (109755339184).

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

90386749712 is a wasteful number, since it uses less digits than its factorization.

90386749712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807024566 (or 807024560 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 90386749712 in words is "ninety billion, three hundred eighty-six million, seven hundred forty-nine thousand, seven hundred twelve".