168983906053 has 2 divisors, whose sum is σ = 168983906054. Its totient is φ = 168983906052.

The previous prime is 168983905969. The next prime is 168983906131. The reversal of 168983906053 is 350609389861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167876214529 + 1107691524 = 409727^2 + 33282^2 .

It is a cyclic number.

It is not a de Polignac number, because 168983906053 - 2³³ = 160393971461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168983909053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84491953026 + 84491953027.

It is an arithmetic number, because the mean of its divisors is an integer number (84491953027).

Almost surely, 2^168983906053 is an apocalyptic number.

It is an amenable number.

168983906053 is a deficient number, since it is larger than the sum of its proper divisors (1).

168983906053 is an equidigital number, since it uses as much as digits as its factorization.

168983906053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 168983906053 in words is "one hundred sixty-eight billion, nine hundred eighty-three million, nine hundred six thousand, fifty-three".