90245705454 has 48 divisors (see below), whose sum is σ = 198513885024. Its totient is φ = 29624179200.

The previous prime is 90245705423. The next prime is 90245705467. The reversal of 90245705454 is 45450754209.

90245705454 is a `hidden beast` number, since 9 + 0 + 24 + 570 + 5 + 4 + 54 = 666.

It is a super-2 number, since 2×90245705454² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1085842 + ... + 1165994.

It is an arithmetic number, because the mean of its divisors is an integer number (4135705938).

Almost surely, 2^90245705454 is an apocalyptic number.

90245705454 is an abundant number, since it is smaller than the sum of its proper divisors (108268179570).

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

90245705454 is a wasteful number, since it uses less digits than its factorization.

90245705454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81113 (or 81110 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 90245705454 in words is "ninety billion, two hundred forty-five million, seven hundred five thousand, four hundred fifty-four".