168986039401 has 8 divisors (see below), whose sum is σ = 171762990344. Its totient is φ = 166209304320.

The previous prime is 168986039393. The next prime is 168986039429. The reversal of 168986039401 is 104930689861.

It can be written as a sum of positive squares in 4 ways, for example, as 2928974400 + 166057065001 = 54120^2 + 407501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168986039401 - 2³ = 168986039393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168986039491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2538721 + ... + 2604433.

It is an arithmetic number, because the mean of its divisors is an integer number (21470373793).

Almost surely, 2^168986039401 is an apocalyptic number.

It is an amenable number.

168986039401 is a deficient number, since it is larger than the sum of its proper divisors (2776950943).

168986039401 is an equidigital number, since it uses as much as digits as its factorization.

168986039401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107931.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 168986039401 in words is "one hundred sixty-eight billion, nine hundred eighty-six million, thirty-nine thousand, four hundred one".