3157681471489 has 2 divisors, whose sum is σ = 3157681471490. Its totient is φ = 3157681471488.

The previous prime is 3157681471481. The next prime is 3157681471513. The reversal of 3157681471489 is 9841741867513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2604431130625 + 553250340864 = 1613825^2 + 743808^2 .

It is a cyclic number.

It is not a de Polignac number, because 3157681471489 - 2³ = 3157681471481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3157681471489.

It is not a weakly prime, because it can be changed into another prime (3157681471481) 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, 1578840735744 + 1578840735745.

It is an arithmetic number, because the mean of its divisors is an integer number (1578840735745).

Almost surely, 2^{3157681471489} is an apocalyptic number.

It is an amenable number.

3157681471489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3157681471489 is an equidigital number, since it uses as much as digits as its factorization.

3157681471489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40642560, while the sum is 64.

The spelling of 3157681471489 in words is "three trillion, one hundred fifty-seven billion, six hundred eighty-one million, four hundred seventy-one thousand, four hundred eighty-nine".