12790718639 has 4 divisors (see below), whose sum is σ = 13088177256. Its totient is φ = 12493260024.

The previous prime is 12790718617. The next prime is 12790718641. The reversal of 12790718639 is 93681709721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93681709721 = 1049 ⋅89305729.

It is a cyclic number.

It is not a de Polignac number, because 12790718639 - 2¹² = 12790714543 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 (12790718659) 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 in 3 ways as a sum of consecutive naturals, for example, 148729244 + ... + 148729329.

It is an arithmetic number, because the mean of its divisors is an integer number (3272044314).

Almost surely, 2^12790718639 is an apocalyptic number.

12790718639 is a deficient number, since it is larger than the sum of its proper divisors (297458617).

12790718639 is an equidigital number, since it uses as much as digits as its factorization.

12790718639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297458616.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The spelling of 12790718639 in words is "twelve billion, seven hundred ninety million, seven hundred eighteen thousand, six hundred thirty-nine".