56900190001998 has 64 divisors (see below), whose sum is σ = 132376957171200. Its totient is φ = 15968665164672.

The previous prime is 56900190001987. The next prime is 56900190002011. The reversal of 56900190001998 is 89910009100965.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27986961 + ... + 29951132.

It is an arithmetic number, because the mean of its divisors is an integer number (2068389955800).

Almost surely, 2^{56900190001998} is an apocalyptic number.

56900190001998 is an abundant number, since it is smaller than the sum of its proper divisors (75476767169202).

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

56900190001998 is a wasteful number, since it uses less digits than its factorization.

56900190001998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57938521.

The product of its (nonzero) digits is 1574640, while the sum is 57.

The spelling of 56900190001998 in words is "fifty-six trillion, nine hundred billion, one hundred ninety million, one thousand, nine hundred ninety-eight".