16670544616665 has 64 divisors (see below), whose sum is σ = 29830437515520. Its totient is φ = 8832802567680.

The previous prime is 16670544616603. The next prime is 16670544616717. The reversal of 16670544616665 is 56661644507661.

It is not a de Polignac number, because 16670544616665 - 2²⁹ = 16670007745753 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128525245 + ... + 128654885.

It is an arithmetic number, because the mean of its divisors is an integer number (466100586180).

Almost surely, 2^{16670544616665} is an apocalyptic number.

16670544616665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16670544616665 is a deficient number, since it is larger than the sum of its proper divisors (13159892898855).

16670544616665 is a wasteful number, since it uses less digits than its factorization.

16670544616665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135879 (or 135873 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 63.

The spelling of 16670544616665 in words is "sixteen trillion, six hundred seventy billion, five hundred forty-four million, six hundred sixteen thousand, six hundred sixty-five".