12764856537 has 12 divisors (see below), whose sum is σ = 18441759024. Its totient is φ = 8508227640.

The previous prime is 12764856509. The next prime is 12764856539. The reversal of 12764856537 is 73565846721.

12764856537 is a `hidden beast` number, since 1 + 2 + 7 + 6 + 48 + 565 + 37 = 666.

It is not a de Polignac number, because 12764856537 - 2¹⁰ = 12764855513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12764856539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90603 + ... + 183680.

It is an arithmetic number, because the mean of its divisors is an integer number (1536813252).

Almost surely, 2^12764856537 is an apocalyptic number.

It is an amenable number.

12764856537 is a deficient number, since it is larger than the sum of its proper divisors (5676902487).

12764856537 is a wasteful number, since it uses less digits than its factorization.

12764856537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279460 (or 279457 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 12764856537 in words is "twelve billion, seven hundred sixty-four million, eight hundred fifty-six thousand, five hundred thirty-seven".