12517271858 has 64 divisors (see below), whose sum is σ = 24724250880. Its totient is φ = 4614278400.

The previous prime is 12517271849. The next prime is 12517271891. The reversal of 12517271858 is 85817271521.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181268 + ... + 240608.

It is an arithmetic number, because the mean of its divisors is an integer number (386316420).

Almost surely, 2^12517271858 is an apocalyptic number.

12517271858 is a deficient number, since it is larger than the sum of its proper divisors (12206979022).

12517271858 is a wasteful number, since it uses less digits than its factorization.

12517271858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59443.

The product of its digits is 313600, while the sum is 47.

The spelling of 12517271858 in words is "twelve billion, five hundred seventeen million, two hundred seventy-one thousand, eight hundred fifty-eight".