15317297593 has 12 divisors (see below), whose sum is σ = 16630721580. Its totient is φ = 14101079616.

The previous prime is 15317297591. The next prime is 15317297599. The reversal of 15317297593 is 39579271351.

It can be written as a sum of positive squares in 6 ways, for example, as 7007698944 + 8309598649 = 83712^2 + 91157^2 .

It is not a de Polignac number, because 15317297593 - 2¹ = 15317297591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15317297593.

It is not an unprimeable number, because it can be changed into a prime (15317297591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58458 + ... + 184531.

It is an arithmetic number, because the mean of its divisors is an integer number (1385893465).

Almost surely, 2^15317297593 is an apocalyptic number.

15317297593 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15317297593 is a deficient number, since it is larger than the sum of its proper divisors (1313423987).

15317297593 is a wasteful number, since it uses less digits than its factorization.

15317297593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243388 (or 243375 counting only the distinct ones).

The product of its digits is 1786050, while the sum is 52.

The spelling of 15317297593 in words is "fifteen billion, three hundred seventeen million, two hundred ninety-seven thousand, five hundred ninety-three".