3161645164891 has 2 divisors, whose sum is σ = 3161645164892. Its totient is φ = 3161645164890.

The previous prime is 3161645164861. The next prime is 3161645164913. The reversal of 3161645164891 is 1984615461613.

It is a strong prime.

It is an emirp because it is prime and its reverse (1984615461613) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3161645164891 is a prime.

It is not a weakly prime, because it can be changed into another prime (3161645164861) 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, 1580822582445 + 1580822582446.

It is an arithmetic number, because the mean of its divisors is an integer number (1580822582446).

Almost surely, 2^{3161645164891} is an apocalyptic number.

3161645164891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3161645164891 is an equidigital number, since it uses as much as digits as its factorization.

3161645164891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 55.

The spelling of 3161645164891 in words is "three trillion, one hundred sixty-one billion, six hundred forty-five million, one hundred sixty-four thousand, eight hundred ninety-one".