12751387771 has 2 divisors, whose sum is σ = 12751387772. Its totient is φ = 12751387770.

The previous prime is 12751387769. The next prime is 12751387777. The reversal of 12751387771 is 17778315721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12751387771 - 2¹ = 12751387769 is a prime.

Together with 12751387769, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12751387777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6375693885 + 6375693886.

It is an arithmetic number, because the mean of its divisors is an integer number (6375693886).

Almost surely, 2^12751387771 is an apocalyptic number.

12751387771 is a deficient number, since it is larger than the sum of its proper divisors (1).

12751387771 is an equidigital number, since it uses as much as digits as its factorization.

12751387771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576240, while the sum is 49.

The spelling of 12751387771 in words is "twelve billion, seven hundred fifty-one million, three hundred eighty-seven thousand, seven hundred seventy-one".