23201970839 has 2 divisors, whose sum is σ = 23201970840. Its totient is φ = 23201970838.

The previous prime is 23201970833. The next prime is 23201970851. The reversal of 23201970839 is 93807910232.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23201970839 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23201970839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23201970833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11600985419 + 11600985420.

It is an arithmetic number, because the mean of its divisors is an integer number (11600985420).

Almost surely, 2^23201970839 is an apocalyptic number.

23201970839 is a deficient number, since it is larger than the sum of its proper divisors (1).

23201970839 is an equidigital number, since it uses as much as digits as its factorization.

23201970839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 23201970839 in words is "twenty-three billion, two hundred one million, nine hundred seventy thousand, eight hundred thirty-nine".