331149198561 has 16 divisors (see below), whose sum is σ = 456528477888. Its totient is φ = 213368672000.

The previous prime is 331149198539. The next prime is 331149198571. The reversal of 331149198561 is 165891941133.

It is a cyclic number.

It is not a de Polignac number, because 331149198561 - 2⁵ = 331149198529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331149198521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12567540 + ... + 12593861.

It is an arithmetic number, because the mean of its divisors is an integer number (28533029868).

Almost surely, 2^331149198561 is an apocalyptic number.

It is an amenable number.

331149198561 is a deficient number, since it is larger than the sum of its proper divisors (125379279327).

331149198561 is a wasteful number, since it uses less digits than its factorization.

331149198561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25161552.

The product of its digits is 699840, while the sum is 51.

The spelling of 331149198561 in words is "three hundred thirty-one billion, one hundred forty-nine million, one hundred ninety-eight thousand, five hundred sixty-one".