12696120739 has 4 divisors (see below), whose sum is σ = 13364337640. Its totient is φ = 12027903840.

The previous prime is 12696120719. The next prime is 12696120769. The reversal of 12696120739 is 93702169621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12696120739 - 2¹³ = 12696112547 is a prime.

It is a super-2 number, since 2×12696120739² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12696120709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334108422 + ... + 334108459.

It is an arithmetic number, because the mean of its divisors is an integer number (3341084410).

Almost surely, 2^12696120739 is an apocalyptic number.

12696120739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12696120739 is a deficient number, since it is larger than the sum of its proper divisors (668216901).

12696120739 is an equidigital number, since it uses as much as digits as its factorization.

12696120739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668216900.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 12696120739 in words is "twelve billion, six hundred ninety-six million, one hundred twenty thousand, seven hundred thirty-nine".