13406247457 has 2 divisors, whose sum is σ = 13406247458. Its totient is φ = 13406247456.

The previous prime is 13406247451. The next prime is 13406247461. The reversal of 13406247457 is 75474260431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12397486336 + 1008761121 = 111344^2 + 31761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13406247457 is a prime.

It is not a weakly prime, because it can be changed into another prime (13406247451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6703123728 + 6703123729.

It is an arithmetic number, because the mean of its divisors is an integer number (6703123729).

Almost surely, 2^13406247457 is an apocalyptic number.

It is an amenable number.

13406247457 is a deficient number, since it is larger than the sum of its proper divisors (1).

13406247457 is an equidigital number, since it uses as much as digits as its factorization.

13406247457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 43.

The spelling of 13406247457 in words is "thirteen billion, four hundred six million, two hundred forty-seven thousand, four hundred fifty-seven".