12756305087 has 4 divisors (see below), whose sum is σ = 12766438440. Its totient is φ = 12746171736.

The previous prime is 12756305083. The next prime is 12756305123. The reversal of 12756305087 is 78050365721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12756305087 - 2² = 12756305083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12756305083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5064788 + ... + 5067305.

It is an arithmetic number, because the mean of its divisors is an integer number (3191609610).

Almost surely, 2^12756305087 is an apocalyptic number.

12756305087 is a deficient number, since it is larger than the sum of its proper divisors (10133353).

12756305087 is a wasteful number, since it uses less digits than its factorization.

12756305087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10133352.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 12756305087 in words is "twelve billion, seven hundred fifty-six million, three hundred five thousand, eighty-seven".