16640773667 has 16 divisors (see below), whose sum is σ = 20260181760. Its totient is φ = 13349994912.

The previous prime is 16640773657. The next prime is 16640773687. The reversal of 16640773667 is 76637704661.

It is a cyclic number.

It is not a de Polignac number, because 16640773667 - 2⁸ = 16640773411 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16640773657) 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, 742688 + ... + 764765.

It is an arithmetic number, because the mean of its divisors is an integer number (1266261360).

Almost surely, 2^16640773667 is an apocalyptic number.

16640773667 is a deficient number, since it is larger than the sum of its proper divisors (3619408093).

16640773667 is a wasteful number, since it uses less digits than its factorization.

16640773667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507562.

The product of its (nonzero) digits is 5334336, while the sum is 53.

The spelling of 16640773667 in words is "sixteen billion, six hundred forty million, seven hundred seventy-three thousand, six hundred sixty-seven".