12797634457 has 2 divisors, whose sum is σ = 12797634458. Its totient is φ = 12797634456.

The previous prime is 12797634449. The next prime is 12797634463. The reversal of 12797634457 is 75443679721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12759057936 + 38576521 = 112956^2 + 6211^2 .

It is a cyclic number.

It is not a de Polignac number, because 12797634457 - 2³ = 12797634449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12797634398 and 12797634407.

It is not a weakly prime, because it can be changed into another prime (12797664457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6398817228 + 6398817229.

It is an arithmetic number, because the mean of its divisors is an integer number (6398817229).

Almost surely, 2^12797634457 is an apocalyptic number.

It is an amenable number.

12797634457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12797634457 is an equidigital number, since it uses as much as digits as its factorization.

12797634457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8890560, while the sum is 55.

The spelling of 12797634457 in words is "twelve billion, seven hundred ninety-seven million, six hundred thirty-four thousand, four hundred fifty-seven".