23649396257 has 2 divisors, whose sum is σ = 23649396258. Its totient is φ = 23649396256.

The previous prime is 23649396233. The next prime is 23649396289. The reversal of 23649396257 is 75269394632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18078415936 + 5570980321 = 134456^2 + 74639^2 .

It is a cyclic number.

It is not a de Polignac number, because 23649396257 - 2¹⁰ = 23649395233 is a prime.

It is a super-2 number, since 2×23649396257² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23649396457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11824698128 + 11824698129.

It is an arithmetic number, because the mean of its divisors is an integer number (11824698129).

Almost surely, 2^23649396257 is an apocalyptic number.

It is an amenable number.

23649396257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23649396257 is an equidigital number, since it uses as much as digits as its factorization.

23649396257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14696640, while the sum is 56.

The spelling of 23649396257 in words is "twenty-three billion, six hundred forty-nine million, three hundred ninety-six thousand, two hundred fifty-seven".