90215530475 has 36 divisors (see below), whose sum is σ = 130500569304. Its totient is φ = 61686535680.

The previous prime is 90215530439. The next prime is 90215530477. The reversal of 90215530475 is 57403551209.

It is not a de Polignac number, because 90215530475 - 2¹⁴ = 90215514091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90215530477) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 328112 + ... + 536738.

It is an arithmetic number, because the mean of its divisors is an integer number (3625015814).

Almost surely, 2^90215530475 is an apocalyptic number.

90215530475 is a deficient number, since it is larger than the sum of its proper divisors (40285038829).

90215530475 is a wasteful number, since it uses less digits than its factorization.

90215530475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209004 (or 208992 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 41.

The spelling of 90215530475 in words is "ninety billion, two hundred fifteen million, five hundred thirty thousand, four hundred seventy-five".