23445975857 has 2 divisors, whose sum is σ = 23445975858. Its totient is φ = 23445975856.

The previous prime is 23445975797. The next prime is 23445975881. The reversal of 23445975857 is 75857954432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14503625761 + 8942350096 = 120431^2 + 94564^2 .

It is a cyclic number.

It is not a de Polignac number, because 23445975857 - 2¹⁰ = 23445974833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23445975796 and 23445975805.

It is not a weakly prime, because it can be changed into another prime (23445975457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11722987928 + 11722987929.

It is an arithmetic number, because the mean of its divisors is an integer number (11722987929).

Almost surely, 2^23445975857 is an apocalyptic number.

It is an amenable number.

23445975857 is a deficient number, since it is larger than the sum of its proper divisors (1).

23445975857 is an equidigital number, since it uses as much as digits as its factorization.

23445975857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336000, while the sum is 59.

The spelling of 23445975857 in words is "twenty-three billion, four hundred forty-five million, nine hundred seventy-five thousand, eight hundred fifty-seven".