12379891129 has 2 divisors, whose sum is σ = 12379891130. Its totient is φ = 12379891128.

The previous prime is 12379891109. The next prime is 12379891159. The reversal of 12379891129 is 92119897321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10501535529 + 1878355600 = 102477^2 + 43340^2 .

It is a cyclic number.

It is not a de Polignac number, because 12379891129 - 2⁹ = 12379890617 is a prime.

It is not a weakly prime, because it can be changed into another prime (12379891109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6189945564 + 6189945565.

It is an arithmetic number, because the mean of its divisors is an integer number (6189945565).

Almost surely, 2^12379891129 is an apocalyptic number.

It is an amenable number.

12379891129 is a deficient number, since it is larger than the sum of its proper divisors (1).

12379891129 is an equidigital number, since it uses as much as digits as its factorization.

12379891129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 52.

The spelling of 12379891129 in words is "twelve billion, three hundred seventy-nine million, eight hundred ninety-one thousand, one hundred twenty-nine".