12751387775 has 24 divisors (see below), whose sum is σ = 18074795520. Its totient is φ = 8741748960.

The previous prime is 12751387771. The next prime is 12751387777. The reversal of 12751387775 is 57778315721.

It is not a de Polignac number, because 12751387775 - 2² = 12751387771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12751387771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1340486 + ... + 1349964.

It is an arithmetic number, because the mean of its divisors is an integer number (753116480).

Almost surely, 2^12751387775 is an apocalyptic number.

12751387775 is a deficient number, since it is larger than the sum of its proper divisors (5323407745).

12751387775 is an equidigital number, since it uses as much as digits as its factorization.

12751387775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17183 (or 17178 counting only the distinct ones).

The product of its digits is 2881200, while the sum is 53.

The spelling of 12751387775 in words is "twelve billion, seven hundred fifty-one million, three hundred eighty-seven thousand, seven hundred seventy-five".