12688299973 has 2 divisors, whose sum is σ = 12688299974. Its totient is φ = 12688299972.

The previous prime is 12688299913. The next prime is 12688299989. The reversal of 12688299973 is 37999288621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6826560129 + 5861739844 = 82623^2 + 76562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12688299973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12688299913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6344149986 + 6344149987.

It is an arithmetic number, because the mean of its divisors is an integer number (6344149987).

Almost surely, 2^12688299973 is an apocalyptic number.

It is an amenable number.

12688299973 is a deficient number, since it is larger than the sum of its proper divisors (1).

12688299973 is an equidigital number, since it uses as much as digits as its factorization.

12688299973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23514624, while the sum is 64.

The spelling of 12688299973 in words is "twelve billion, six hundred eighty-eight million, two hundred ninety-nine thousand, nine hundred seventy-three".