15617164613 has 2 divisors, whose sum is σ = 15617164614. Its totient is φ = 15617164612.

The previous prime is 15617164567. The next prime is 15617164649. The reversal of 15617164613 is 31646171651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15584526244 + 32638369 = 124838^2 + 5713^2 .

It is an emirp because it is prime and its reverse (31646171651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15617164613 - 2²² = 15612970309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15617164813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7808582306 + 7808582307.

It is an arithmetic number, because the mean of its divisors is an integer number (7808582307).

Almost surely, 2^15617164613 is an apocalyptic number.

It is an amenable number.

15617164613 is a deficient number, since it is larger than the sum of its proper divisors (1).

15617164613 is an equidigital number, since it uses as much as digits as its factorization.

15617164613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The spelling of 15617164613 in words is "fifteen billion, six hundred seventeen million, one hundred sixty-four thousand, six hundred thirteen".