12617746379 has 4 divisors (see below), whose sum is σ = 14420281584. Its totient is φ = 10815211176.

The previous prime is 12617746373. The next prime is 12617746399. The reversal of 12617746379 is 97364771621.

It is a happy number.

12617746379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12617746379 - 2¹² = 12617742283 is a prime.

It is a super-2 number, since 2×12617746379² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12617746379.

It is not an unprimeable number, because it can be changed into a prime (12617746373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901267592 + ... + 901267605.

It is an arithmetic number, because the mean of its divisors is an integer number (3605070396).

Almost surely, 2^12617746379 is an apocalyptic number.

12617746379 is a deficient number, since it is larger than the sum of its proper divisors (1802535205).

12617746379 is an equidigital number, since it uses as much as digits as its factorization.

12617746379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802535204.

The product of its digits is 2667168, while the sum is 53.

The spelling of 12617746379 in words is "twelve billion, six hundred seventeen million, seven hundred forty-six thousand, three hundred seventy-nine".