168627509231 has 2 divisors, whose sum is σ = 168627509232. Its totient is φ = 168627509230.

The previous prime is 168627509227. The next prime is 168627509293. The reversal of 168627509231 is 132905726861.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168627509231 - 2² = 168627509227 is a prime.

It is a super-2 number, since 2×168627509231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 168627509231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168627502231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84313754615 + 84313754616.

It is an arithmetic number, because the mean of its divisors is an integer number (84313754616).

Almost surely, 2^168627509231 is an apocalyptic number.

168627509231 is a deficient number, since it is larger than the sum of its proper divisors (1).

168627509231 is an equidigital number, since it uses as much as digits as its factorization.

168627509231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 168627509231 in words is "one hundred sixty-eight billion, six hundred twenty-seven million, five hundred nine thousand, two hundred thirty-one".