16640166401 has 8 divisors (see below), whose sum is σ = 16859851008. Its totient is φ = 16421886000.

The previous prime is 16640166383. The next prime is 16640166407. The reversal of 16640166401 is 10466104661.

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 16640166401 - 2¹⁴ = 16640150017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16640166407) 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, 327185 + ... + 374606.

It is an arithmetic number, because the mean of its divisors is an integer number (2107481376).

Almost surely, 2^16640166401 is an apocalyptic number.

It is an amenable number.

16640166401 is a deficient number, since it is larger than the sum of its proper divisors (219684607).

16640166401 is a wasteful number, since it uses less digits than its factorization.

16640166401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702103.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 16640166401 in words is "sixteen billion, six hundred forty million, one hundred sixty-six thousand, four hundred one".