12756047138 has 16 divisors (see below), whose sum is σ = 21325900320. Its totient is φ = 5686906176.

The previous prime is 12756047113. The next prime is 12756047153. The reversal of 12756047138 is 83174065721.

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, 9872456 + ... + 9873747.

It is an arithmetic number, because the mean of its divisors is an integer number (1332868770).

Almost surely, 2^12756047138 is an apocalyptic number.

12756047138 is a deficient number, since it is larger than the sum of its proper divisors (8569853182).

12756047138 is a wasteful number, since it uses less digits than its factorization.

12756047138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19746241.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 12756047138 in words is "twelve billion, seven hundred fifty-six million, forty-seven thousand, one hundred thirty-eight".