99591879072 has 72 divisors (see below), whose sum is σ = 304110930816. Its totient is φ = 28454821248.

The previous prime is 99591879067. The next prime is 99591879113. The reversal of 99591879072 is 27097819599.

It is a junction number, because it is equal to n+sod(n) for n = 99591878994 and 99591879012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10581168 + ... + 10590575.

It is an arithmetic number, because the mean of its divisors is an integer number (4223762928).

Almost surely, 2^99591879072 is an apocalyptic number.

It is an amenable number.

99591879072 is an abundant number, since it is smaller than the sum of its proper divisors (204519051744).

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

99591879072 is a wasteful number, since it uses less digits than its factorization.

99591879072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21171770 (or 21171755 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 66.

The spelling of 99591879072 in words is "ninety-nine billion, five hundred ninety-one million, eight hundred seventy-nine thousand, seventy-two".