23717953897189 has 2 divisors, whose sum is σ = 23717953897190. Its totient is φ = 23717953897188.

The previous prime is 23717953897153. The next prime is 23717953897277. The reversal of 23717953897189 is 98179835971732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16849859200164 + 6868094697025 = 4104858^2 + 2620705^2 .

It is a cyclic number.

It is not a de Polignac number, because 23717953897189 - 2²³ = 23717945508581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23717953897889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11858976948594 + 11858976948595.

It is an arithmetic number, because the mean of its divisors is an integer number (11858976948595).

Almost surely, 2^{23717953897189} is an apocalyptic number.

It is an amenable number.

23717953897189 is a deficient number, since it is larger than the sum of its proper divisors (1).

23717953897189 is an equidigital number, since it uses as much as digits as its factorization.

23717953897189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440270720, while the sum is 79.

The spelling of 23717953897189 in words is "twenty-three trillion, seven hundred seventeen billion, nine hundred fifty-three million, eight hundred ninety-seven thousand, one hundred eighty-nine".