15717089317 has 2 divisors, whose sum is σ = 15717089318. Its totient is φ = 15717089316.

The previous prime is 15717089257. The next prime is 15717089347. The reversal of 15717089317 is 71398071751.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10292914116 + 5424175201 = 101454^2 + 73649^2 .

It is an emirp because it is prime and its reverse (71398071751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15717089317 - 2⁷ = 15717089189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15717089347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7858544658 + 7858544659.

It is an arithmetic number, because the mean of its divisors is an integer number (7858544659).

Almost surely, 2^15717089317 is an apocalyptic number.

It is an amenable number.

15717089317 is a deficient number, since it is larger than the sum of its proper divisors (1).

15717089317 is an equidigital number, since it uses as much as digits as its factorization.

15717089317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 370440, while the sum is 49.

The spelling of 15717089317 in words is "fifteen billion, seven hundred seventeen million, eighty-nine thousand, three hundred seventeen".