99531444576 has 48 divisors (see below), whose sum is σ = 272629615104. Its totient is φ = 31734662784.

The previous prime is 99531444503. The next prime is 99531444581. The reversal of 99531444576 is 67544413599.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22536616 + ... + 22541031.

It is an arithmetic number, because the mean of its divisors is an integer number (5679783648).

Almost surely, 2^99531444576 is an apocalyptic number.

99531444576 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

99531444576 is an abundant number, since it is smaller than the sum of its proper divisors (173098170528).

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

99531444576 is a wasteful number, since it uses less digits than its factorization.

99531444576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45077683 (or 45077675 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 57.

The spelling of 99531444576 in words is "ninety-nine billion, five hundred thirty-one million, four hundred forty-four thousand, five hundred seventy-six".