16661173062417 has 16 divisors (see below), whose sum is σ = 24070507073088. Its totient is φ = 10190127551040.

The previous prime is 16661173062319. The next prime is 16661173062473. The reversal of 16661173062417 is 71426037116661.

It is not a de Polignac number, because 16661173062417 - 2¹⁸ = 16661172800273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16661173062417.

It is not an unprimeable number, because it can be changed into a prime (16661173062487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1310452434 + ... + 1310465147.

It is an arithmetic number, because the mean of its divisors is an integer number (1504406692068).

Almost surely, 2^{16661173062417} is an apocalyptic number.

It is an amenable number.

16661173062417 is a deficient number, since it is larger than the sum of its proper divisors (7409334010671).

16661173062417 is a wasteful number, since it uses less digits than its factorization.

16661173062417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620917760.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 16661173062417 in words is "sixteen trillion, six hundred sixty-one billion, one hundred seventy-three million, sixty-two thousand, four hundred seventeen".