99549272640 has 112 divisors (see below), whose sum is σ = 323778067200. Its totient is φ = 25898987520.

The previous prime is 99549272633. The next prime is 99549272659. The reversal of 99549272640 is 4627294599.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1225240 + ... + 1303959.

It is an arithmetic number, because the mean of its divisors is an integer number (2890875600).

Almost surely, 2^99549272640 is an apocalyptic number.

It is an amenable number.

99549272640 is an abundant number, since it is smaller than the sum of its proper divisors (224228794560).

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

99549272640 is a wasteful number, since it uses less digits than its factorization.

99549272640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529260 (or 2529250 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 99549272640 in words is "ninety-nine billion, five hundred forty-nine million, two hundred seventy-two thousand, six hundred forty".