15865715000131 has 2 divisors, whose sum is σ = 15865715000132. Its totient is φ = 15865715000130.

The previous prime is 15865715000089. The next prime is 15865715000209. The reversal of 15865715000131 is 13100051756851.

It is a weak prime.

It is an emirp because it is prime and its reverse (13100051756851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15865715000131 - 2³⁹ = 15315959186243 is a prime.

It is a super-2 number, since 2×15865715000131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15865715000731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7932857500065 + 7932857500066.

It is an arithmetic number, because the mean of its divisors is an integer number (7932857500066).

Almost surely, 2^{15865715000131} is an apocalyptic number.

15865715000131 is a deficient number, since it is larger than the sum of its proper divisors (1).

15865715000131 is an equidigital number, since it uses as much as digits as its factorization.

15865715000131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 43.

Adding to 15865715000131 its reverse (13100051756851), we get a palindrome (28965766756982).

The spelling of 15865715000131 in words is "fifteen trillion, eight hundred sixty-five billion, seven hundred fifteen million, one hundred thirty-one", and thus it is an aban number.