168173380416749 has 16 divisors (see below), whose sum is σ = 174059770283520. Its totient is φ = 162315944556480.

The previous prime is 168173380416677. The next prime is 168173380416781. The reversal of 168173380416749 is 947614083371861.

It is a cyclic number.

It is not a de Polignac number, because 168173380416749 - 2²⁸ = 168173111981293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168173380416049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88022162 + ... + 89912444.

It is an arithmetic number, because the mean of its divisors is an integer number (10878735642720).

Almost surely, 2^{168173380416749} is an apocalyptic number.

It is an amenable number.

168173380416749 is a deficient number, since it is larger than the sum of its proper divisors (5886389866771).

168173380416749 is a wasteful number, since it uses less digits than its factorization.

168173380416749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897940.

The product of its (nonzero) digits is 146313216, while the sum is 68.

The spelling of 168173380416749 in words is "one hundred sixty-eight trillion, one hundred seventy-three billion, three hundred eighty million, four hundred sixteen thousand, seven hundred forty-nine".