23390138417 has 2 divisors, whose sum is σ = 23390138418. Its totient is φ = 23390138416.

The previous prime is 23390138377. The next prime is 23390138437. The reversal of 23390138417 is 71483109332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23320649521 + 69488896 = 152711^2 + 8336^2 .

It is a cyclic number.

It is not a de Polignac number, because 23390138417 - 2⁶ = 23390138353 is a prime.

It is not a weakly prime, because it can be changed into another prime (23390138437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11695069208 + 11695069209.

It is an arithmetic number, because the mean of its divisors is an integer number (11695069209).

Almost surely, 2^23390138417 is an apocalyptic number.

It is an amenable number.

23390138417 is a deficient number, since it is larger than the sum of its proper divisors (1).

23390138417 is an equidigital number, since it uses as much as digits as its factorization.

23390138417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 23390138417 in words is "twenty-three billion, three hundred ninety million, one hundred thirty-eight thousand, four hundred seventeen".