12751401387639 has 24 divisors (see below), whose sum is σ = 18111117525120. Its totient is φ = 7978592535424.

The previous prime is 12751401387611. The next prime is 12751401387649. The reversal of 12751401387639 is 93678310415721.

It is not a de Polignac number, because 12751401387639 - 2²⁸ = 12751132952183 is a prime.

It is a super-3 number, since 3×12751401387639³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12751401387649) 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, 20172729 + ... + 20795234.

It is an arithmetic number, because the mean of its divisors is an integer number (754629896880).

It is a 1-persistent number, because it is pandigital, but 2⋅12751401387639 = 25502802775278 is not.

Almost surely, 2^{12751401387639} is an apocalyptic number.

12751401387639 is a deficient number, since it is larger than the sum of its proper divisors (5359716137481).

12751401387639 is a wasteful number, since it uses less digits than its factorization.

12751401387639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40968359 (or 40968342 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 12751401387639 in words is "twelve trillion, seven hundred fifty-one billion, four hundred one million, three hundred eighty-seven thousand, six hundred thirty-nine".