23177210197 has 2 divisors, whose sum is σ = 23177210198. Its totient is φ = 23177210196.

The previous prime is 23177210137. The next prime is 23177210213. The reversal of 23177210197 is 79101277132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16210637041 + 6966573156 = 127321^2 + 83466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23177210197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23177210137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11588605098 + 11588605099.

It is an arithmetic number, because the mean of its divisors is an integer number (11588605099).

Almost surely, 2^23177210197 is an apocalyptic number.

It is an amenable number.

23177210197 is a deficient number, since it is larger than the sum of its proper divisors (1).

23177210197 is an equidigital number, since it uses as much as digits as its factorization.

23177210197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37044, while the sum is 40.

The spelling of 23177210197 in words is "twenty-three billion, one hundred seventy-seven million, two hundred ten thousand, one hundred ninety-seven".