15585835787131 has 2 divisors, whose sum is σ = 15585835787132. Its totient is φ = 15585835787130.

The previous prime is 15585835787117. The next prime is 15585835787141. The reversal of 15585835787131 is 13178753858551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15585835787131 - 2⁵ = 15585835787099 is a prime.

It is a super-2 number, since 2×15585835787131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15585835787141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7792917893565 + 7792917893566.

It is an arithmetic number, because the mean of its divisors is an integer number (7792917893566).

Almost surely, 2^{15585835787131} is an apocalyptic number.

15585835787131 is a deficient number, since it is larger than the sum of its proper divisors (1).

15585835787131 is an equidigital number, since it uses as much as digits as its factorization.

15585835787131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120000, while the sum is 67.

The spelling of 15585835787131 in words is "fifteen trillion, five hundred eighty-five billion, eight hundred thirty-five million, seven hundred eighty-seven thousand, one hundred thirty-one".