90051973215 has 32 divisors (see below), whose sum is σ = 152721858240. Its totient is φ = 45154197504.

The previous prime is 90051973183. The next prime is 90051973223. The reversal of 90051973215 is 51237915009.

It is not a de Polignac number, because 90051973215 - 2⁵ = 90051973183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50491 + ... + 427379.

It is an arithmetic number, because the mean of its divisors is an integer number (4772558070).

Almost surely, 2^90051973215 is an apocalyptic number.

90051973215 is a deficient number, since it is larger than the sum of its proper divisors (62669885025).

90051973215 is a wasteful number, since it uses less digits than its factorization.

90051973215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377851.

The product of its (nonzero) digits is 85050, while the sum is 42.

The spelling of 90051973215 in words is "ninety billion, fifty-one million, nine hundred seventy-three thousand, two hundred fifteen".