99531444575 has 6 divisors (see below), whose sum is σ = 123418991304. Its totient is φ = 79625155640.

The previous prime is 99531444503. The next prime is 99531444581. The reversal of 99531444575 is 57544413599.

It is not a de Polignac number, because 99531444575 - 2⁸ = 99531444319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99531444575.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1990628867 + ... + 1990628916.

It is an arithmetic number, because the mean of its divisors is an integer number (20569831884).

Almost surely, 2^99531444575 is an apocalyptic number.

99531444575 is a deficient number, since it is larger than the sum of its proper divisors (23887546729).

99531444575 is a wasteful number, since it uses less digits than its factorization.

99531444575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3981257793 (or 3981257788 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 56.

The spelling of 99531444575 in words is "ninety-nine billion, five hundred thirty-one million, four hundred forty-four thousand, five hundred seventy-five".