12607979889 has 8 divisors (see below), whose sum is σ = 17127821952. Its totient is φ = 8246728880.

The previous prime is 12607979887. The next prime is 12607979893. The reversal of 12607979889 is 98897970621.

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

It is a cyclic number.

It is not a de Polignac number, because 12607979889 - 2¹ = 12607979887 is a prime.

It is a super-2 number, since 2×12607979889² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12607979887) 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, 39647577 + ... + 39647894.

It is an arithmetic number, because the mean of its divisors is an integer number (2140977744).

Almost surely, 2^12607979889 is an apocalyptic number.

It is an amenable number.

12607979889 is a deficient number, since it is larger than the sum of its proper divisors (4519842063).

12607979889 is an equidigital number, since it uses as much as digits as its factorization.

12607979889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79295527.

The product of its (nonzero) digits is 27433728, while the sum is 66.

The spelling of 12607979889 in words is "twelve billion, six hundred seven million, nine hundred seventy-nine thousand, eight hundred eighty-nine".