23443642247 has 2 divisors, whose sum is σ = 23443642248. Its totient is φ = 23443642246.

The previous prime is 23443642241. The next prime is 23443642297. The reversal of 23443642247 is 74224634432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23443642247 - 2²² = 23439447943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23443642241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11721821123 + 11721821124.

It is an arithmetic number, because the mean of its divisors is an integer number (11721821124).

Almost surely, 2^23443642247 is an apocalyptic number.

23443642247 is a deficient number, since it is larger than the sum of its proper divisors (1).

23443642247 is an equidigital number, since it uses as much as digits as its factorization.

23443642247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 41.

The spelling of 23443642247 in words is "twenty-three billion, four hundred forty-three million, six hundred forty-two thousand, two hundred forty-seven".