15715871457 has 64 divisors (see below), whose sum is σ = 26110328832. Its totient is φ = 8271648000.

The previous prime is 15715871449. The next prime is 15715871461. The reversal of 15715871457 is 75417851751.

It is not a de Polignac number, because 15715871457 - 2³ = 15715871449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15715871447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 588832 + ... + 614942.

It is an arithmetic number, because the mean of its divisors is an integer number (407973888).

Almost surely, 2^15715871457 is an apocalyptic number.

It is an amenable number.

15715871457 is a deficient number, since it is larger than the sum of its proper divisors (10394457375).

15715871457 is a wasteful number, since it uses less digits than its factorization.

15715871457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26222.

The product of its digits is 1372000, while the sum is 51.

The spelling of 15715871457 in words is "fifteen billion, seven hundred fifteen million, eight hundred seventy-one thousand, four hundred fifty-seven".