99890216928 has 96 divisors (see below), whose sum is σ = 295337700000. Its totient is φ = 32840598528.

The previous prime is 99890216851. The next prime is 99890217013. The reversal of 99890216928 is 82961209899.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728803 + ... + 854946.

It is an arithmetic number, because the mean of its divisors is an integer number (3076434375).

Almost surely, 2^99890216928 is an apocalyptic number.

It is an amenable number.

99890216928 is an abundant number, since it is smaller than the sum of its proper divisors (195447483072).

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

99890216928 is a wasteful number, since it uses less digits than its factorization.

99890216928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583841 (or 1583827 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 63.

The spelling of 99890216928 in words is "ninety-nine billion, eight hundred ninety million, two hundred sixteen thousand, nine hundred twenty-eight".