23205057247 has 2 divisors, whose sum is σ = 23205057248. Its totient is φ = 23205057246.

The previous prime is 23205057191. The next prime is 23205057269. The reversal of 23205057247 is 74275050232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23205057247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23205057047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11602528623 + 11602528624.

It is an arithmetic number, because the mean of its divisors is an integer number (11602528624).

Almost surely, 2^23205057247 is an apocalyptic number.

23205057247 is a deficient number, since it is larger than the sum of its proper divisors (1).

23205057247 is an equidigital number, since it uses as much as digits as its factorization.

23205057247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 37.

The spelling of 23205057247 in words is "twenty-three billion, two hundred five million, fifty-seven thousand, two hundred forty-seven".