90506559944 has 16 divisors (see below), whose sum is σ = 169706793600. Its totient is φ = 45251414992.

The previous prime is 90506559931. The next prime is 90506559953. The reversal of 90506559944 is 44995560509.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 90506559944.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14852 + ... + 425715.

It is an arithmetic number, because the mean of its divisors is an integer number (10606674600).

Almost surely, 2^90506559944 is an apocalyptic number.

It is an amenable number.

90506559944 is a deficient number, since it is larger than the sum of its proper divisors (79200233656).

90506559944 is a wasteful number, since it uses less digits than its factorization.

90506559944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466252 (or 466248 counting only the distinct ones).

The product of its (nonzero) digits is 8748000, while the sum is 56.

The spelling of 90506559944 in words is "ninety billion, five hundred six million, five hundred fifty-nine thousand, nine hundred forty-four".