15708468137 has 2 divisors, whose sum is σ = 15708468138. Its totient is φ = 15708468136.

The previous prime is 15708468133. The next prime is 15708468203. The reversal of 15708468137 is 73186480751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9812685481 + 5895782656 = 99059^2 + 76784^2 .

It is a cyclic number.

It is not a de Polignac number, because 15708468137 - 2² = 15708468133 is a prime.

It is a super-2 number, since 2×15708468137² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15708468133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7854234068 + 7854234069.

It is an arithmetic number, because the mean of its divisors is an integer number (7854234069).

Almost surely, 2^15708468137 is an apocalyptic number.

It is an amenable number.

15708468137 is a deficient number, since it is larger than the sum of its proper divisors (1).

15708468137 is an equidigital number, since it uses as much as digits as its factorization.

15708468137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 15708468137 in words is "fifteen billion, seven hundred eight million, four hundred sixty-eight thousand, one hundred thirty-seven".