12699589429 has 2 divisors, whose sum is σ = 12699589430. Its totient is φ = 12699589428.

The previous prime is 12699589423. The next prime is 12699589471. The reversal of 12699589429 is 92498599621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12381680529 + 317908900 = 111273^2 + 17830^2 .

It is a cyclic number.

It is not a de Polignac number, because 12699589429 - 2⁹ = 12699588917 is a prime.

It is a super-2 number, since 2×12699589429² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12699589423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6349794714 + 6349794715.

It is an arithmetic number, because the mean of its divisors is an integer number (6349794715).

Almost surely, 2^12699589429 is an apocalyptic number.

It is an amenable number.

12699589429 is a deficient number, since it is larger than the sum of its proper divisors (1).

12699589429 is an equidigital number, since it uses as much as digits as its factorization.

12699589429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25194240, while the sum is 64.

The spelling of 12699589429 in words is "twelve billion, six hundred ninety-nine million, five hundred eighty-nine thousand, four hundred twenty-nine".