90073215264 has 24 divisors (see below), whose sum is σ = 236442190320. Its totient is φ = 30024405056.

The previous prime is 90073215139. The next prime is 90073215299. The reversal of 90073215264 is 46251237009.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×90073215264² (a number of 23 digits) contains 22 as substring.

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, 469131234 + ... + 469131425.

It is an arithmetic number, because the mean of its divisors is an integer number (9851757930).

Almost surely, 2^90073215264 is an apocalyptic number.

It is an amenable number.

90073215264 is an abundant number, since it is smaller than the sum of its proper divisors (146368975056).

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

90073215264 is a wasteful number, since it uses less digits than its factorization.

90073215264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938262672 (or 938262664 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 90073215264 in words is "ninety billion, seventy-three million, two hundred fifteen thousand, two hundred sixty-four".