90721419265 has 8 divisors (see below), whose sum is σ = 109092983040. Its totient is φ = 72425615472.

The previous prime is 90721419233. The next prime is 90721419277. The reversal of 90721419265 is 56291412709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90721419265 - 2⁵ = 90721419233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18937359 + ... + 18942148.

It is an arithmetic number, because the mean of its divisors is an integer number (13636622880).

Almost surely, 2^90721419265 is an apocalyptic number.

It is an amenable number.

90721419265 is a deficient number, since it is larger than the sum of its proper divisors (18371563775).

90721419265 is a wasteful number, since it uses less digits than its factorization.

90721419265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37879991.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 90721419265 in words is "ninety billion, seven hundred twenty-one million, four hundred nineteen thousand, two hundred sixty-five".