23523162989 has 2 divisors, whose sum is σ = 23523162990. Its totient is φ = 23523162988.

The previous prime is 23523162983. The next prime is 23523163021. The reversal of 23523162989 is 98926132532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21948422500 + 1574740489 = 148150^2 + 39683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23523162989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23523162983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11761581494 + 11761581495.

It is an arithmetic number, because the mean of its divisors is an integer number (11761581495).

Almost surely, 2^23523162989 is an apocalyptic number.

It is an amenable number.

23523162989 is a deficient number, since it is larger than the sum of its proper divisors (1).

23523162989 is an equidigital number, since it uses as much as digits as its factorization.

23523162989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 50.

The spelling of 23523162989 in words is "twenty-three billion, five hundred twenty-three million, one hundred sixty-two thousand, nine hundred eighty-nine".