316642461551641 has 2 divisors, whose sum is σ = 316642461551642. Its totient is φ = 316642461551640.

The previous prime is 316642461551597. The next prime is 316642461551687. The reversal of 316642461551641 is 146155164246613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186148393991641 + 130494067560000 = 13643621^2 + 11423400^2 .

It is a cyclic number.

It is not a de Polignac number, because 316642461551641 - 2²⁵ = 316642427997209 is a prime.

It is a super-2 number, since 2×316642461551641² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (316642461557641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158321230775820 + 158321230775821.

It is an arithmetic number, because the mean of its divisors is an integer number (158321230775821).

Almost surely, 2^{316642461551641} is an apocalyptic number.

It is an amenable number.

316642461551641 is a deficient number, since it is larger than the sum of its proper divisors (1).

316642461551641 is an equidigital number, since it uses as much as digits as its factorization.

316642461551641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12441600, while the sum is 55.

The spelling of 316642461551641 in words is "three hundred sixteen trillion, six hundred forty-two billion, four hundred sixty-one million, five hundred fifty-one thousand, six hundred forty-one".