99398526640 has 60 divisors (see below), whose sum is σ = 268832454336. Its totient is φ = 34079493504.

The previous prime is 99398526637. The next prime is 99398526641. The reversal of 99398526640 is 4662589399.

It is not an unprimeable number, because it can be changed into a prime (99398526641) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 12674464 + ... + 12682303.

Almost surely, 2^99398526640 is an apocalyptic number.

It is an amenable number.

99398526640 is an abundant number, since it is smaller than the sum of its proper divisors (169433927696).

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

99398526640 is a wasteful number, since it uses less digits than its factorization.

99398526640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25356794 (or 25356781 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 61.

The spelling of 99398526640 in words is "ninety-nine billion, three hundred ninety-eight million, five hundred twenty-six thousand, six hundred forty".