168291269231 has 2 divisors, whose sum is σ = 168291269232. Its totient is φ = 168291269230.

The previous prime is 168291269227. The next prime is 168291269303. The reversal of 168291269231 is 132962192861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168291269231 - 2² = 168291269227 is a prime.

It is a super-2 number, since 2×168291269231² (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 168291269231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168291769231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84145634615 + 84145634616.

It is an arithmetic number, because the mean of its divisors is an integer number (84145634616).

Almost surely, 2^168291269231 is an apocalyptic number.

168291269231 is a deficient number, since it is larger than the sum of its proper divisors (1).

168291269231 is an equidigital number, since it uses as much as digits as its factorization.

168291269231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 50.

The spelling of 168291269231 in words is "one hundred sixty-eight billion, two hundred ninety-one million, two hundred sixty-nine thousand, two hundred thirty-one".