12747495918 has 16 divisors (see below), whose sum is σ = 25496789760. Its totient is φ = 4248865656.

The previous prime is 12747495877. The next prime is 12747495949. The reversal of 12747495918 is 81959474721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28171 + ... + 162137.

It is an arithmetic number, because the mean of its divisors is an integer number (1593549360).

Almost surely, 2^12747495918 is an apocalyptic number.

12747495918 is an abundant number, since it is smaller than the sum of its proper divisors (12749293842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12747495918 is a wasteful number, since it uses less digits than its factorization.

12747495918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149831.

The product of its digits is 5080320, while the sum is 57.

The spelling of 12747495918 in words is "twelve billion, seven hundred forty-seven million, four hundred ninety-five thousand, nine hundred eighteen".