23491816417 has 2 divisors, whose sum is σ = 23491816418. Its totient is φ = 23491816416.

The previous prime is 23491816307. The next prime is 23491816423. The reversal of 23491816417 is 71461819432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21349885456 + 2141930961 = 146116^2 + 46281^2 .

It is a cyclic number.

It is not a de Polignac number, because 23491816417 - 2¹⁹ = 23491292129 is a prime.

It is not a weakly prime, because it can be changed into another prime (23491816457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11745908208 + 11745908209.

It is an arithmetic number, because the mean of its divisors is an integer number (11745908209).

Almost surely, 2^23491816417 is an apocalyptic number.

It is an amenable number.

23491816417 is a deficient number, since it is larger than the sum of its proper divisors (1).

23491816417 is an equidigital number, since it uses as much as digits as its factorization.

23491816417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The spelling of 23491816417 in words is "twenty-three billion, four hundred ninety-one million, eight hundred sixteen thousand, four hundred seventeen".