23907218057 has 2 divisors, whose sum is σ = 23907218058. Its totient is φ = 23907218056.

The previous prime is 23907218047. The next prime is 23907218081. The reversal of 23907218057 is 75081270932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17658157456 + 6249060601 = 132884^2 + 79051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23907218057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23907217999 and 23907218017.

It is not a weakly prime, because it can be changed into another prime (23907218047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11953609028 + 11953609029.

It is an arithmetic number, because the mean of its divisors is an integer number (11953609029).

Almost surely, 2^23907218057 is an apocalyptic number.

It is an amenable number.

23907218057 is a deficient number, since it is larger than the sum of its proper divisors (1).

23907218057 is an equidigital number, since it uses as much as digits as its factorization.

23907218057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 44.

Adding to 23907218057 its reverse (75081270932), we get a palindrome (98988488989).

The spelling of 23907218057 in words is "twenty-three billion, nine hundred seven million, two hundred eighteen thousand, fifty-seven".