198631136572 has 24 divisors (see below), whose sum is σ = 383114234160. Its totient is φ = 89356085760.

The previous prime is 198631136569. The next prime is 198631136581. The reversal of 198631136572 is 275631136891.

It is a super-2 number, since 2×198631136572² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 23265547 + ... + 23274082.

It is an arithmetic number, because the mean of its divisors is an integer number (15963093090).

Almost surely, 2^198631136572 is an apocalyptic number.

It is an amenable number.

198631136572 is a deficient number, since it is larger than the sum of its proper divisors (184483097588).

198631136572 is a wasteful number, since it uses less digits than its factorization.

198631136572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46539741 (or 46539739 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 52.

The spelling of 198631136572 in words is "one hundred ninety-eight billion, six hundred thirty-one million, one hundred thirty-six thousand, five hundred seventy-two".