24693238647257 has 2 divisors, whose sum is σ = 24693238647258. Its totient is φ = 24693238647256.

The previous prime is 24693238647163. The next prime is 24693238647269. The reversal of 24693238647257 is 75274683239642.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22271405509081 + 2421833138176 = 4719259^2 + 1556224^2 .

It is a cyclic number.

It is not a de Polignac number, because 24693238647257 - 2²⁸ = 24692970211801 is a prime.

It is not a weakly prime, because it can be changed into another prime (24693238647277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12346619323628 + 12346619323629.

It is an arithmetic number, because the mean of its divisors is an integer number (12346619323629).

Almost surely, 2^{24693238647257} is an apocalyptic number.

It is an amenable number.

24693238647257 is a deficient number, since it is larger than the sum of its proper divisors (1).

24693238647257 is an equidigital number, since it uses as much as digits as its factorization.

24693238647257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 731566080, while the sum is 68.

The spelling of 24693238647257 in words is "twenty-four trillion, six hundred ninety-three billion, two hundred thirty-eight million, six hundred forty-seven thousand, two hundred fifty-seven".