16617161705 has 8 divisors (see below), whose sum is σ = 19943024712. Its totient is φ = 13292108928.

The previous prime is 16617161629. The next prime is 16617161747. The reversal of 16617161705 is 50716171661.

It can be written as a sum of positive squares in 4 ways, for example, as 812649049 + 15804512656 = 28507^2 + 125716^2 .

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 16617161705 - 2¹⁶ = 16617096169 is a prime.

It is a super-2 number, since 2×16617161705² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156482 + ... + 240251.

It is an arithmetic number, because the mean of its divisors is an integer number (2492878089).

Almost surely, 2^16617161705 is an apocalyptic number.

It is an amenable number.

16617161705 is a deficient number, since it is larger than the sum of its proper divisors (3325863007).

16617161705 is an equidigital number, since it uses as much as digits as its factorization.

16617161705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405115.

The product of its (nonzero) digits is 52920, while the sum is 41.

The spelling of 16617161705 in words is "sixteen billion, six hundred seventeen million, one hundred sixty-one thousand, seven hundred five".