15196560917 has 2 divisors, whose sum is σ = 15196560918. Its totient is φ = 15196560916.

The previous prime is 15196560893. The next prime is 15196560919. The reversal of 15196560917 is 71906569151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14493992881 + 702568036 = 120391^2 + 26506^2 .

It is a cyclic number.

It is not a de Polignac number, because 15196560917 - 2⁶ = 15196560853 is a prime.

Together with 15196560919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15196560919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7598280458 + 7598280459.

It is an arithmetic number, because the mean of its divisors is an integer number (7598280459).

Almost surely, 2^15196560917 is an apocalyptic number.

It is an amenable number.

15196560917 is a deficient number, since it is larger than the sum of its proper divisors (1).

15196560917 is an equidigital number, since it uses as much as digits as its factorization.

15196560917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 510300, while the sum is 50.

The spelling of 15196560917 in words is "fifteen billion, one hundred ninety-six million, five hundred sixty thousand, nine hundred seventeen".