168632722897 has 2 divisors, whose sum is σ = 168632722898. Its totient is φ = 168632722896.

The previous prime is 168632722879. The next prime is 168632722903. The reversal of 168632722897 is 798227236861.

Together with previous prime (168632722879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167214748561 + 1417974336 = 408919^2 + 37656^2 .

It is a cyclic number.

It is not a de Polignac number, because 168632722897 - 2²⁷ = 168498505169 is a prime.

It is not a weakly prime, because it can be changed into another prime (168732722897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84316361448 + 84316361449.

It is an arithmetic number, because the mean of its divisors is an integer number (84316361449).

Almost surely, 2^168632722897 is an apocalyptic number.

It is an amenable number.

168632722897 is a deficient number, since it is larger than the sum of its proper divisors (1).

168632722897 is an equidigital number, since it uses as much as digits as its factorization.

168632722897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 61.

The spelling of 168632722897 in words is "one hundred sixty-eight billion, six hundred thirty-two million, seven hundred twenty-two thousand, eight hundred ninety-seven".