16647661707 has 8 divisors (see below), whose sum is σ = 22560765840. Its totient is φ = 10916499360.

The previous prime is 16647661651. The next prime is 16647661727. The reversal of 16647661707 is 70716674661.

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

It is not a de Polignac number, because 16647661707 - 2¹¹ = 16647659659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16647661707.

It is not an unprimeable number, because it can be changed into a prime (16647661727) 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, 45485232 + ... + 45485597.

It is an arithmetic number, because the mean of its divisors is an integer number (2820095730).

Almost surely, 2^16647661707 is an apocalyptic number.

16647661707 is a deficient number, since it is larger than the sum of its proper divisors (5913104133).

16647661707 is an equidigital number, since it uses as much as digits as its factorization.

16647661707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90970893.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 16647661707 in words is "sixteen billion, six hundred forty-seven million, six hundred sixty-one thousand, seven hundred seven".