198800761991631 has 32 divisors (see below), whose sum is σ = 272466197496000. Its totient is φ = 128879038439424.

The previous prime is 198800761991609. The next prime is 198800761991639. The reversal of 198800761991631 is 136199167008891.

It is not a de Polignac number, because 198800761991631 - 2²⁹ = 198800225120719 is a prime.

It is a super-2 number, since 2×198800761991631² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198800761991639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 794896755 + ... + 795146811.

It is an arithmetic number, because the mean of its divisors is an integer number (8514568671750).

Almost surely, 2^{198800761991631} is an apocalyptic number.

198800761991631 is a deficient number, since it is larger than the sum of its proper divisors (73665435504369).

198800761991631 is a wasteful number, since it uses less digits than its factorization.

198800761991631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294475.

The product of its (nonzero) digits is 35271936, while the sum is 69.

The spelling of 198800761991631 in words is "one hundred ninety-eight trillion, eight hundred billion, seven hundred sixty-one million, nine hundred ninety-one thousand, six hundred thirty-one".