90170078050 has 48 divisors (see below), whose sum is σ = 182406028392. Its totient is φ = 32963904000.

The previous prime is 90170078027. The next prime is 90170078059. The reversal of 90170078050 is 5087007109.

It can be written as a sum of positive squares in 12 ways, for example, as 20991083689 + 69178994361 = 144883^2 + 263019^2 .

It is not an unprimeable number, because it can be changed into a prime (90170078059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 621099 + ... + 752398.

Almost surely, 2^90170078050 is an apocalyptic number.

90170078050 is an abundant number, since it is smaller than the sum of its proper divisors (92235950342).

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

90170078050 is a wasteful number, since it uses less digits than its factorization.

90170078050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373623 (or 1373618 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 37.

The spelling of 90170078050 in words is "ninety billion, one hundred seventy million, seventy-eight thousand, fifty".