3161262664081 has 2 divisors, whose sum is σ = 3161262664082. Its totient is φ = 3161262664080.

The previous prime is 3161262663989. The next prime is 3161262664093. The reversal of 3161262664081 is 1804662621613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3056147297856 + 105115366225 = 1748184^2 + 324215^2 .

It is a cyclic number.

It is not a de Polignac number, because 3161262664081 - 2³¹ = 3159115180433 is a prime.

It is a super-2 number, since 2×3161262664081² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3161262664181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1580631332040 + 1580631332041.

It is an arithmetic number, because the mean of its divisors is an integer number (1580631332041).

Almost surely, 2^{3161262664081} is an apocalyptic number.

It is an amenable number.

3161262664081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3161262664081 is an equidigital number, since it uses as much as digits as its factorization.

3161262664081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 3161262664081 in words is "three trillion, one hundred sixty-one billion, two hundred sixty-two million, six hundred sixty-four thousand, eighty-one".