6931759317961 has 2 divisors, whose sum is σ = 6931759317962. Its totient is φ = 6931759317960.

The previous prime is 6931759317941. The next prime is 6931759318013. The reversal of 6931759317961 is 1697139571396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4294659390736 + 2637099927225 = 2072356^2 + 1623915^2 .

It is a cyclic number.

It is not a de Polignac number, because 6931759317961 - 2¹⁷ = 6931759186889 is a prime.

It is not a weakly prime, because it can be changed into another prime (6931759317911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3465879658980 + 3465879658981.

It is an arithmetic number, because the mean of its divisors is an integer number (3465879658981).

Almost surely, 2^{6931759317961} is an apocalyptic number.

It is an amenable number.

6931759317961 is a deficient number, since it is larger than the sum of its proper divisors (1).

6931759317961 is an equidigital number, since it uses as much as digits as its factorization.

6931759317961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57868020, while the sum is 67.

The spelling of 6931759317961 in words is "six trillion, nine hundred thirty-one billion, seven hundred fifty-nine million, three hundred seventeen thousand, nine hundred sixty-one".