12001979369 has 2 divisors, whose sum is σ = 12001979370. Its totient is φ = 12001979368.

The previous prime is 12001979359. The next prime is 12001979387. The reversal of 12001979369 is 96397910021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8103600400 + 3898378969 = 90020^2 + 62437^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001979369 - 2⁸ = 12001979113 is a prime.

It is a super-2 number, since 2×12001979369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12001979329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000989684 + 6000989685.

It is an arithmetic number, because the mean of its divisors is an integer number (6000989685).

Almost surely, 2^12001979369 is an apocalyptic number.

It is an amenable number.

12001979369 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001979369 is an equidigital number, since it uses as much as digits as its factorization.

12001979369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 47.

The spelling of 12001979369 in words is "twelve billion, one million, nine hundred seventy-nine thousand, three hundred sixty-nine".