12640044179 has 16 divisors (see below), whose sum is σ = 14708939520. Its totient is φ = 10637580960.

The previous prime is 12640044173. The next prime is 12640044199. The reversal of 12640044179 is 97144004621.

It is a cyclic number.

It is not a de Polignac number, because 12640044179 - 2⁴ = 12640044163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12640044173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214112 + ... + 266690.

It is an arithmetic number, because the mean of its divisors is an integer number (919308720).

Almost surely, 2^12640044179 is an apocalyptic number.

12640044179 is a deficient number, since it is larger than the sum of its proper divisors (2068895341).

12640044179 is an equidigital number, since it uses as much as digits as its factorization.

12640044179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53210.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 12640044179 in words is "twelve billion, six hundred forty million, forty-four thousand, one hundred seventy-nine".