15717138268 has 24 divisors (see below), whose sum is σ = 29641571568. Its totient is φ = 7248967296.

The previous prime is 15717138223. The next prime is 15717138271. The reversal of 15717138268 is 86283171751.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30946 + ... + 179977.

It is an arithmetic number, because the mean of its divisors is an integer number (1235065482).

Almost surely, 2^15717138268 is an apocalyptic number.

It is an amenable number.

15717138268 is a deficient number, since it is larger than the sum of its proper divisors (13924433300).

15717138268 is a wasteful number, since it uses less digits than its factorization.

15717138268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212373 (or 212371 counting only the distinct ones).

The product of its digits is 564480, while the sum is 49.

The spelling of 15717138268 in words is "fifteen billion, seven hundred seventeen million, one hundred thirty-eight thousand, two hundred sixty-eight".