168336835129 has 2 divisors, whose sum is σ = 168336835130. Its totient is φ = 168336835128.

The previous prime is 168336835109. The next prime is 168336835187. The reversal of 168336835129 is 921538633861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116226446400 + 52110388729 = 340920^2 + 228277^2 .

It is a cyclic number.

It is not a de Polignac number, because 168336835129 - 2³¹ = 166189351481 is a prime.

It is a super-2 number, since 2×168336835129² (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 168336835129.

It is not a weakly prime, because it can be changed into another prime (168336835109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84168417564 + 84168417565.

It is an arithmetic number, because the mean of its divisors is an integer number (84168417565).

Almost surely, 2^168336835129 is an apocalyptic number.

It is an amenable number.

168336835129 is a deficient number, since it is larger than the sum of its proper divisors (1).

168336835129 is an equidigital number, since it uses as much as digits as its factorization.

168336835129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 55.

The spelling of 168336835129 in words is "one hundred sixty-eight billion, three hundred thirty-six million, eight hundred thirty-five thousand, one hundred twenty-nine".