99643790016 has 42 divisors (see below), whose sum is σ = 285610934492. Its totient is φ = 33214596480.

The previous prime is 99643790009. The next prime is 99643790027. The reversal of 99643790016 is 61009734699.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86495770 + ... + 86496921.

Almost surely, 2^99643790016 is an apocalyptic number.

99643790016 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

99643790016 is an abundant number, since it is smaller than the sum of its proper divisors (185967144476).

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

99643790016 is a wasteful number, since it uses less digits than its factorization.

99643790016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172992709 (or 172992696 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The spelling of 99643790016 in words is "ninety-nine billion, six hundred forty-three million, seven hundred ninety thousand, sixteen".