12626655397 has 2 divisors, whose sum is σ = 12626655398. Its totient is φ = 12626655396.

The previous prime is 12626655367. The next prime is 12626655413. The reversal of 12626655397 is 79355662621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6906607236 + 5720048161 = 83106^2 + 75631^2 .

It is a cyclic number.

It is not a de Polignac number, because 12626655397 - 2¹⁵ = 12626622629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12626655317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6313327698 + 6313327699.

It is an arithmetic number, because the mean of its divisors is an integer number (6313327699).

Almost surely, 2^12626655397 is an apocalyptic number.

It is an amenable number.

12626655397 is a deficient number, since it is larger than the sum of its proper divisors (1).

12626655397 is an equidigital number, since it uses as much as digits as its factorization.

12626655397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 52.

The spelling of 12626655397 in words is "twelve billion, six hundred twenty-six million, six hundred fifty-five thousand, three hundred ninety-seven".