12957021839139 has 8 divisors (see below), whose sum is σ = 19744033278720. Its totient is φ = 7404012479496.

The previous prime is 12957021839107. The next prime is 12957021839141. The reversal of 12957021839139 is 93193812075921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12957021839139 - 2⁵ = 12957021839107 is a prime.

It is a super-2 number, since 2×12957021839139² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12957021839159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308500519959 + ... + 308500520000.

It is an arithmetic number, because the mean of its divisors is an integer number (2468004159840).

Almost surely, 2^{12957021839139} is an apocalyptic number.

12957021839139 is a deficient number, since it is larger than the sum of its proper divisors (6787011439581).

12957021839139 is an equidigital number, since it uses as much as digits as its factorization.

12957021839139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617001039969.

The product of its (nonzero) digits is 7348320, while the sum is 60.

The spelling of 12957021839139 in words is "twelve trillion, nine hundred fifty-seven billion, twenty-one million, eight hundred thirty-nine thousand, one hundred thirty-nine".