12919861979 has 8 divisors (see below), whose sum is σ = 12940445232. Its totient is φ = 12899295360.

The previous prime is 12919861957. The next prime is 12919862017. The reversal of 12919861979 is 97916891921.

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 12919861979 - 2¹⁶ = 12919796443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12919861379) 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, 3498524 + ... + 3502214.

It is an arithmetic number, because the mean of its divisors is an integer number (1617555654).

Almost surely, 2^12919861979 is an apocalyptic number.

12919861979 is a deficient number, since it is larger than the sum of its proper divisors (20583253).

12919861979 is an equidigital number, since it uses as much as digits as its factorization.

12919861979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8317.

The product of its digits is 4408992, while the sum is 62.

The spelling of 12919861979 in words is "twelve billion, nine hundred nineteen million, eight hundred sixty-one thousand, nine hundred seventy-nine".