90005405552 has 20 divisors (see below), whose sum is σ = 183563656680. Its totient is φ = 42634139328.

The previous prime is 90005405551. The next prime is 90005405561. The reversal of 90005405552 is 25550450009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90005405551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148034903 + ... + 148035510.

It is an arithmetic number, because the mean of its divisors is an integer number (9178182834).

Almost surely, 2^90005405552 is an apocalyptic number.

It is an amenable number.

90005405552 is an abundant number, since it is smaller than the sum of its proper divisors (93558251128).

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

90005405552 is a wasteful number, since it uses less digits than its factorization.

90005405552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296070440 (or 296070434 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 90005405552 in words is "ninety billion, five million, four hundred five thousand, five hundred fifty-two".