23205952417 has 2 divisors, whose sum is σ = 23205952418. Its totient is φ = 23205952416.

The previous prime is 23205952397. The next prime is 23205952421. The reversal of 23205952417 is 71425950232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17268325281 + 5937627136 = 131409^2 + 77056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23205952417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23205952417.

It is not a weakly prime, because it can be changed into another prime (23205952447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11602976208 + 11602976209.

It is an arithmetic number, because the mean of its divisors is an integer number (11602976209).

Almost surely, 2^23205952417 is an apocalyptic number.

It is an amenable number.

23205952417 is a deficient number, since it is larger than the sum of its proper divisors (1).

23205952417 is an equidigital number, since it uses as much as digits as its factorization.

23205952417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 23205952417 in words is "twenty-three billion, two hundred five million, nine hundred fifty-two thousand, four hundred seventeen".