12919402291 has 4 divisors (see below), whose sum is σ = 12947067432. Its totient is φ = 12891737152.

The previous prime is 12919402213. The next prime is 12919402313. The reversal of 12919402291 is 19220491921.

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 12919402291 - 2⁷ = 12919402163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12919403291) 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, 13831870 + ... + 13832803.

It is an arithmetic number, because the mean of its divisors is an integer number (3236766858).

Almost surely, 2^12919402291 is an apocalyptic number.

12919402291 is a deficient number, since it is larger than the sum of its proper divisors (27665141).

12919402291 is an equidigital number, since it uses as much as digits as its factorization.

12919402291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27665140.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 12919402291 in words is "twelve billion, nine hundred nineteen million, four hundred two thousand, two hundred ninety-one".