99825647808 has 56 divisors (see below), whose sum is σ = 264148783360. Its totient is φ = 33271845120.

The previous prime is 99825647783. The next prime is 99825647819. The reversal of 99825647808 is 80874652899.

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, 2506773 + ... + 2546283.

It is an arithmetic number, because the mean of its divisors is an integer number (4716942560).

Almost surely, 2^99825647808 is an apocalyptic number.

It is an amenable number.

99825647808 is an abundant number, since it is smaller than the sum of its proper divisors (164323135552).

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

99825647808 is a wasteful number, since it uses less digits than its factorization.

99825647808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52685 (or 52675 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 66.

The spelling of 99825647808 in words is "ninety-nine billion, eight hundred twenty-five million, six hundred forty-seven thousand, eight hundred eight".