99564794400 has 144 divisors (see below), whose sum is σ = 325713528000. Its totient is φ = 26417064960.

The previous prime is 99564794377. The next prime is 99564794419. The reversal of 99564794400 is 449746599.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 373366 + ... + 581834.

It is an arithmetic number, because the mean of its divisors is an integer number (2261899500).

Almost surely, 2^99564794400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99564794400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162856764000).

99564794400 is an abundant number, since it is smaller than the sum of its proper divisors (226148733600).

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

99564794400 is a wasteful number, since it uses less digits than its factorization.

99564794400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208691 (or 208678 counting only the distinct ones).

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

The spelling of 99564794400 in words is "ninety-nine billion, five hundred sixty-four million, seven hundred ninety-four thousand, four hundred".