23867865838657 has 2 divisors, whose sum is σ = 23867865838658. Its totient is φ = 23867865838656.

The previous prime is 23867865838643. The next prime is 23867865838679. The reversal of 23867865838657 is 75683856876832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23845485977856 + 22379860801 = 4883184^2 + 149599^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23867865838657 is a prime.

It is not a weakly prime, because it can be changed into another prime (23867865838637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11933932919328 + 11933932919329.

It is an arithmetic number, because the mean of its divisors is an integer number (11933932919329).

Almost surely, 2^{23867865838657} is an apocalyptic number.

It is an amenable number.

23867865838657 is a deficient number, since it is larger than the sum of its proper divisors (1).

23867865838657 is an equidigital number, since it uses as much as digits as its factorization.

23867865838657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19508428800, while the sum is 82.

The spelling of 23867865838657 in words is "twenty-three trillion, eight hundred sixty-seven billion, eight hundred sixty-five million, eight hundred thirty-eight thousand, six hundred fifty-seven".