998977900902 has 32 divisors (see below), whose sum is σ = 2103988608000. Its totient is φ = 315335119968.

The previous prime is 998977900889. The next prime is 998977900919. The reversal of 998977900902 is 209009779899.

998977900902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×998977900902² (a number of 25 digits) contains 22 as substring.

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, 1552893 + ... + 2099864.

It is an arithmetic number, because the mean of its divisors is an integer number (65749644000).

Almost surely, 2^998977900902 is an apocalyptic number.

998977900902 is an abundant number, since it is smaller than the sum of its proper divisors (1105010707098).

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

998977900902 is a wasteful number, since it uses less digits than its factorization.

998977900902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655180.

The product of its (nonzero) digits is 46294416, while the sum is 69.

The spelling of 998977900902 in words is "nine hundred ninety-eight billion, nine hundred seventy-seven million, nine hundred thousand, nine hundred two".