23180971687 has 2 divisors, whose sum is σ = 23180971688. Its totient is φ = 23180971686.

The previous prime is 23180971643. The next prime is 23180971721. The reversal of 23180971687 is 78617908132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23180971687 - 2⁷ = 23180971559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23180978687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11590485843 + 11590485844.

It is an arithmetic number, because the mean of its divisors is an integer number (11590485844).

Almost surely, 2^23180971687 is an apocalyptic number.

23180971687 is a deficient number, since it is larger than the sum of its proper divisors (1).

23180971687 is an equidigital number, since it uses as much as digits as its factorization.

23180971687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 23180971687 in words is "twenty-three billion, one hundred eighty million, nine hundred seventy-one thousand, six hundred eighty-seven".