198130156056 has 64 divisors (see below), whose sum is σ = 628984627200. Its totient is φ = 56608615584.

The previous prime is 198130156051. The next prime is 198130156087. The reversal of 198130156056 is 650651031891.

198130156056 is a `hidden beast` number, since 1 + 9 + 8 + 1 + 30 + 1 + 5 + 605 + 6 = 666.

It is a super-3 number, since 3×198130156056³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198130156051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65517720 + ... + 65520743.

It is an arithmetic number, because the mean of its divisors is an integer number (9827884800).

Almost surely, 2^198130156056 is an apocalyptic number.

It is an amenable number.

198130156056 is an abundant number, since it is smaller than the sum of its proper divisors (430854471144).

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

198130156056 is a wasteful number, since it uses less digits than its factorization.

198130156056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131038485 (or 131038475 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 198130156056 in words is "one hundred ninety-eight billion, one hundred thirty million, one hundred fifty-six thousand, fifty-six".