90368821458 has 24 divisors (see below), whose sum is σ = 197228309148. Its totient is φ = 29903064192.

The previous prime is 90368821441. The next prime is 90368821469. The reversal of 90368821458 is 85412886309.

90368821458 is a `hidden beast` number, since 90 + 3 + 6 + 88 + 21 + 458 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 82462588569 + 7906232889 = 287163^2 + 88917^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18320491 + ... + 18325422.

Almost surely, 2^90368821458 is an apocalyptic number.

90368821458 is an abundant number, since it is smaller than the sum of its proper divisors (106859487690).

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

90368821458 is a wasteful number, since it uses less digits than its factorization.

90368821458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36646058 (or 36646055 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 90368821458 in words is "ninety billion, three hundred sixty-eight million, eight hundred twenty-one thousand, four hundred fifty-eight".