12959999989 has 2 divisors, whose sum is σ = 12959999990. Its totient is φ = 12959999988.

The previous prime is 12959999971. The next prime is 12960000013. The reversal of 12959999989 is 98999995921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12394368900 + 565631089 = 111330^2 + 23783^2 .

It is a cyclic number.

It is not a de Polignac number, because 12959999989 - 2³³ = 4370065397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12959999909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6479999994 + 6479999995.

It is an arithmetic number, because the mean of its divisors is an integer number (6479999995).

Almost surely, 2^12959999989 is an apocalyptic number.

It is an amenable number.

12959999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12959999989 is an equidigital number, since it uses as much as digits as its factorization.

12959999989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 382637520, while the sum is 79.

The spelling of 12959999989 in words is "twelve billion, nine hundred fifty-nine million, nine hundred ninety-nine thousand, nine hundred eighty-nine".