3161645164861 has 2 divisors, whose sum is σ = 3161645164862. Its totient is φ = 3161645164860.

The previous prime is 3161645164771. The next prime is 3161645164891. The reversal of 3161645164861 is 1684615461613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2489563287225 + 672081877636 = 1577835^2 + 819806^2 .

It is a cyclic number.

It is not a de Polignac number, because 3161645164861 - 2²³ = 3161636776253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3161645164799 and 3161645164808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3161645164891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1580822582430 + 1580822582431.

It is an arithmetic number, because the mean of its divisors is an integer number (1580822582431).

Almost surely, 2^{3161645164861} is an apocalyptic number.

It is an amenable number.

3161645164861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3161645164861 is an equidigital number, since it uses as much as digits as its factorization.

3161645164861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 52.

The spelling of 3161645164861 in words is "three trillion, one hundred sixty-one billion, six hundred forty-five million, one hundred sixty-four thousand, eight hundred sixty-one".