23258291977 has 2 divisors, whose sum is σ = 23258291978. Its totient is φ = 23258291976.

The previous prime is 23258291893. The next prime is 23258292007. The reversal of 23258291977 is 77919285232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11642625801 + 11615666176 = 107901^2 + 107776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23258291977 is a prime.

It is not a weakly prime, because it can be changed into another prime (23258291377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11629145988 + 11629145989.

It is an arithmetic number, because the mean of its divisors is an integer number (11629145989).

Almost surely, 2^23258291977 is an apocalyptic number.

It is an amenable number.

23258291977 is a deficient number, since it is larger than the sum of its proper divisors (1).

23258291977 is an equidigital number, since it uses as much as digits as its factorization.

23258291977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 55.

The spelling of 23258291977 in words is "twenty-three billion, two hundred fifty-eight million, two hundred ninety-one thousand, nine hundred seventy-seven".