232417968721 has 2 divisors, whose sum is σ = 232417968722. Its totient is φ = 232417968720.

The previous prime is 232417968719. The next prime is 232417968733. The reversal of 232417968721 is 127869714232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191962278225 + 40455690496 = 438135^2 + 201136^2 .

It is a cyclic number.

It is not a de Polignac number, because 232417968721 - 2¹ = 232417968719 is a prime.

It is a super-2 number, since 2×232417968721² (a number of 24 digits) contains 22 as substring.

Together with 232417968719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (232417968781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116208984360 + 116208984361.

It is an arithmetic number, because the mean of its divisors is an integer number (116208984361).

Almost surely, 2^232417968721 is an apocalyptic number.

It is an amenable number.

232417968721 is a deficient number, since it is larger than the sum of its proper divisors (1).

232417968721 is an equidigital number, since it uses as much as digits as its factorization.

232417968721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The spelling of 232417968721 in words is "two hundred thirty-two billion, four hundred seventeen million, nine hundred sixty-eight thousand, seven hundred twenty-one".