23638816247 has 2 divisors, whose sum is σ = 23638816248. Its totient is φ = 23638816246.

The previous prime is 23638816171. The next prime is 23638816261. The reversal of 23638816247 is 74261883632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23638816247 - 2¹⁰ = 23638815223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23638816195 and 23638816204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23638816297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11819408123 + 11819408124.

It is an arithmetic number, because the mean of its divisors is an integer number (11819408124).

Almost surely, 2^23638816247 is an apocalyptic number.

23638816247 is a deficient number, since it is larger than the sum of its proper divisors (1).

23638816247 is an equidigital number, since it uses as much as digits as its factorization.

23638816247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 50.

The spelling of 23638816247 in words is "twenty-three billion, six hundred thirty-eight million, eight hundred sixteen thousand, two hundred forty-seven".