99427140864 has 108 divisors (see below), whose sum is σ = 299137159776. Its totient is φ = 31701390336.

The previous prime is 99427140863. The next prime is 99427140881. The reversal of 99427140864 is 46804172499.

It is a self number, because there is not a number n which added to its sum of digits gives 99427140864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99427140863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 885142 + ... + 991125.

Almost surely, 2^99427140864 is an apocalyptic number.

It is an amenable number.

99427140864 is an abundant number, since it is smaller than the sum of its proper divisors (199710018912).

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

99427140864 is a wasteful number, since it uses less digits than its factorization.

99427140864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876312 (or 1876295 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 99427140864 in words is "ninety-nine billion, four hundred twenty-seven million, one hundred forty thousand, eight hundred sixty-four".