992988961728858 has 48 divisors (see below), whose sum is σ = 2245036110572736. Its totient is φ = 316602695787840.

The previous prime is 992988961728857. The next prime is 992988961728859. The reversal of 992988961728858 is 858827169889299.

It is a happy number.

992988961728858 is a `hidden beast` number, since 9 + 9 + 298 + 8 + 96 + 172 + 8 + 8 + 58 = 666.

It is an interprime number because it is at equal distance from previous prime (992988961728857) and next prime (992988961728859).

It is not an unprimeable number, because it can be changed into a prime (992988961728857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43876441 + ... + 62538947.

It is an arithmetic number, because the mean of its divisors is an integer number (46771585636932).

Almost surely, 2^{992988961728858} is an apocalyptic number.

992988961728858 is an abundant number, since it is smaller than the sum of its proper divisors (1252047148843878).

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

992988961728858 is a wasteful number, since it uses less digits than its factorization.

992988961728858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18791059 (or 18791056 counting only the distinct ones).

The product of its digits is 180592312320, while the sum is 99.

The spelling of 992988961728858 in words is "nine hundred ninety-two trillion, nine hundred eighty-eight billion, nine hundred sixty-one million, seven hundred twenty-eight thousand, eight hundred fifty-eight".