320111051491961 has 8 divisors (see below), whose sum is σ = 320165476365504. Its totient is φ = 320056627539600.

The previous prime is 320111051491927. The next prime is 320111051491993. The reversal of 320111051491961 is 169194150111023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320111051491961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320111051496961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1388345636 + ... + 1388576186.

It is an arithmetic number, because the mean of its divisors is an integer number (40020684545688).

Almost surely, 2^{320111051491961} is an apocalyptic number.

It is an amenable number.

320111051491961 is a deficient number, since it is larger than the sum of its proper divisors (54424873543).

320111051491961 is a wasteful number, since it uses less digits than its factorization.

320111051491961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460591.

The product of its (nonzero) digits is 58320, while the sum is 44.

The spelling of 320111051491961 in words is "three hundred twenty trillion, one hundred eleven billion, fifty-one million, four hundred ninety-one thousand, nine hundred sixty-one".