23815743251 has 2 divisors, whose sum is σ = 23815743252. Its totient is φ = 23815743250.

The previous prime is 23815743233. The next prime is 23815743253. The reversal of 23815743251 is 15234751832.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23815743251 is a prime.

Together with 23815743253, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23815743199 and 23815743208.

It is not a weakly prime, because it can be changed into another prime (23815743253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11907871625 + 11907871626.

It is an arithmetic number, because the mean of its divisors is an integer number (11907871626).

Almost surely, 2^23815743251 is an apocalyptic number.

23815743251 is a deficient number, since it is larger than the sum of its proper divisors (1).

23815743251 is an equidigital number, since it uses as much as digits as its factorization.

23815743251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The spelling of 23815743251 in words is "twenty-three billion, eight hundred fifteen million, seven hundred forty-three thousand, two hundred fifty-one".