23016340639 has 2 divisors, whose sum is σ = 23016340640. Its totient is φ = 23016340638.

The previous prime is 23016340621. The next prime is 23016340717. The reversal of 23016340639 is 93604361032.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23016340639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23016340598 and 23016340607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23016340619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11508170319 + 11508170320.

It is an arithmetic number, because the mean of its divisors is an integer number (11508170320).

Almost surely, 2^23016340639 is an apocalyptic number.

23016340639 is a deficient number, since it is larger than the sum of its proper divisors (1).

23016340639 is an equidigital number, since it uses as much as digits as its factorization.

23016340639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 37.

The spelling of 23016340639 in words is "twenty-three billion, sixteen million, three hundred forty thousand, six hundred thirty-nine".