16172608117 has 4 divisors (see below), whose sum is σ = 16299951616. Its totient is φ = 16045264620.

The previous prime is 16172608099. The next prime is 16172608163. The reversal of 16172608117 is 71180627161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71180627161 = 7 ⋅10168661023.

It is a cyclic number.

It is not a de Polignac number, because 16172608117 - 2¹¹ = 16172606069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16172608117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16172698117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63671559 + ... + 63671812.

It is an arithmetic number, because the mean of its divisors is an integer number (4074987904).

Almost surely, 2^16172608117 is an apocalyptic number.

It is an amenable number.

16172608117 is a deficient number, since it is larger than the sum of its proper divisors (127343499).

16172608117 is a wasteful number, since it uses less digits than its factorization.

16172608117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127343498.

The product of its (nonzero) digits is 28224, while the sum is 40.

The spelling of 16172608117 in words is "sixteen billion, one hundred seventy-two million, six hundred eight thousand, one hundred seventeen".