90993566044 has 48 divisors (see below), whose sum is σ = 168387444736. Its totient is φ = 42965899200.

The previous prime is 90993566009. The next prime is 90993566047. The reversal of 90993566044 is 44066539909.

It is a super-2 number, since 2×90993566044² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90993566047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913267 + ... + 1007989.

Almost surely, 2^90993566044 is an apocalyptic number.

It is an amenable number.

90993566044 is a deficient number, since it is larger than the sum of its proper divisors (77393878692).

90993566044 is a wasteful number, since it uses less digits than its factorization.

90993566044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94946 (or 94944 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 55.

The spelling of 90993566044 in words is "ninety billion, nine hundred ninety-three million, five hundred sixty-six thousand, forty-four".