23923735447 has 2 divisors, whose sum is σ = 23923735448. Its totient is φ = 23923735446.

The previous prime is 23923735441. The next prime is 23923735477. The reversal of 23923735447 is 74453732932.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23923735447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23923735447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23923735441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11961867723 + 11961867724.

It is an arithmetic number, because the mean of its divisors is an integer number (11961867724).

Almost surely, 2^23923735447 is an apocalyptic number.

23923735447 is a deficient number, since it is larger than the sum of its proper divisors (1).

23923735447 is an equidigital number, since it uses as much as digits as its factorization.

23923735447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 49.

The spelling of 23923735447 in words is "twenty-three billion, nine hundred twenty-three million, seven hundred thirty-five thousand, four hundred forty-seven".