168732430157 has 2 divisors, whose sum is σ = 168732430158. Its totient is φ = 168732430156.

The previous prime is 168732430109. The next prime is 168732430159. The reversal of 168732430157 is 751034237861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152557423396 + 16175006761 = 390586^2 + 127181^2 .

It is an emirp because it is prime and its reverse (751034237861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168732430157 - 2²⁸ = 168463994701 is a prime.

Together with 168732430159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168732430159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84366215078 + 84366215079.

It is an arithmetic number, because the mean of its divisors is an integer number (84366215079).

Almost surely, 2^168732430157 is an apocalyptic number.

It is an amenable number.

168732430157 is a deficient number, since it is larger than the sum of its proper divisors (1).

168732430157 is an equidigital number, since it uses as much as digits as its factorization.

168732430157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 168732430157 in words is "one hundred sixty-eight billion, seven hundred thirty-two million, four hundred thirty thousand, one hundred fifty-seven".