198982056231864 has 96 divisors (see below), whose sum is σ = 566974250846640. Its totient is φ = 62960703321600.

The previous prime is 198982056231851. The next prime is 198982056231869. The reversal of 198982056231864 is 468132650289891.

198982056231864 is a `hidden beast` number, since 1 + 9 + 8 + 9 + 8 + 20 + 562 + 31 + 8 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 198982056231792 and 198982056231801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198982056231869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 910780582 + ... + 910999029.

Almost surely, 2^{198982056231864} is an apocalyptic number.

It is an amenable number.

198982056231864 is an abundant number, since it is smaller than the sum of its proper divisors (367992194614776).

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

198982056231864 is a wasteful number, since it uses less digits than its factorization.

198982056231864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821779701 (or 1821779694 counting only the distinct ones).

The product of its (nonzero) digits is 358318080, while the sum is 72.

The spelling of 198982056231864 in words is "one hundred ninety-eight trillion, nine hundred eighty-two billion, fifty-six million, two hundred thirty-one thousand, eight hundred sixty-four".