90486031872 has 80 divisors (see below), whose sum is σ = 243194189040. Its totient is φ = 29895032832.

The previous prime is 90486031849. The next prime is 90486031879. The reversal of 90486031872 is 27813068409.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90486031879) 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, 87097 + ... + 434232.

It is an arithmetic number, because the mean of its divisors is an integer number (3039927363).

Almost surely, 2^90486031872 is an apocalyptic number.

It is an amenable number.

90486031872 is an abundant number, since it is smaller than the sum of its proper divisors (152708157168).

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

90486031872 is a wasteful number, since it uses less digits than its factorization.

90486031872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521463 (or 521447 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 90486031872 in words is "ninety billion, four hundred eighty-six million, thirty-one thousand, eight hundred seventy-two".