23240023657 has 2 divisors, whose sum is σ = 23240023658. Its totient is φ = 23240023656.

The previous prime is 23240023613. The next prime is 23240023661. The reversal of 23240023657 is 75632004232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23232161241 + 7862416 = 152421^2 + 2804^2 .

It is a cyclic number.

It is not a de Polignac number, because 23240023657 - 2⁷ = 23240023529 is a prime.

It is not a weakly prime, because it can be changed into another prime (23240023957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11620011828 + 11620011829.

It is an arithmetic number, because the mean of its divisors is an integer number (11620011829).

Almost surely, 2^23240023657 is an apocalyptic number.

It is an amenable number.

23240023657 is a deficient number, since it is larger than the sum of its proper divisors (1).

23240023657 is an equidigital number, since it uses as much as digits as its factorization.

23240023657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 34.

Adding to 23240023657 its reverse (75632004232), we get a palindrome (98872027889).

The spelling of 23240023657 in words is "twenty-three billion, two hundred forty million, twenty-three thousand, six hundred fifty-seven".