23219027917 has 2 divisors, whose sum is σ = 23219027918. Its totient is φ = 23219027916.

The previous prime is 23219027891. The next prime is 23219027929. The reversal of 23219027917 is 71972091232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19058906916 + 4160121001 = 138054^2 + 64499^2 .

It is a cyclic number.

It is not a de Polignac number, because 23219027917 - 2⁷ = 23219027789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23219027317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11609513958 + 11609513959.

It is an arithmetic number, because the mean of its divisors is an integer number (11609513959).

Almost surely, 2^23219027917 is an apocalyptic number.

It is an amenable number.

23219027917 is a deficient number, since it is larger than the sum of its proper divisors (1).

23219027917 is an equidigital number, since it uses as much as digits as its factorization.

23219027917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 23219027917 in words is "twenty-three billion, two hundred nineteen million, twenty-seven thousand, nine hundred seventeen".