168169169801 has 2 divisors, whose sum is σ = 168169169802. Its totient is φ = 168169169800.

The previous prime is 168169169797. The next prime is 168169169827. The reversal of 168169169801 is 108961961861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162251868025 + 5917301776 = 402805^2 + 76924^2 .

It is a cyclic number.

It is not a de Polignac number, because 168169169801 - 2² = 168169169797 is a prime.

It is not a weakly prime, because it can be changed into another prime (168169169881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84084584900 + 84084584901.

It is an arithmetic number, because the mean of its divisors is an integer number (84084584901).

Almost surely, 2^168169169801 is an apocalyptic number.

It is an amenable number.

168169169801 is a deficient number, since it is larger than the sum of its proper divisors (1).

168169169801 is an equidigital number, since it uses as much as digits as its factorization.

168169169801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 56.

The spelling of 168169169801 in words is "one hundred sixty-eight billion, one hundred sixty-nine million, one hundred sixty-nine thousand, eight hundred one".