16172317345 has 8 divisors (see below), whose sum is σ = 20548356264. Its totient is φ = 12176803584.

The previous prime is 16172317327. The next prime is 16172317433. The reversal of 16172317345 is 54371327161.

It can be written as a sum of positive squares in 4 ways, for example, as 134374464 + 16037942881 = 11592^2 + 126641^2 .

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 16172317345 - 2⁹ = 16172316833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16172317298 and 16172317307.

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, 95131194 + ... + 95131363.

It is an arithmetic number, because the mean of its divisors is an integer number (2568544533).

Almost surely, 2^16172317345 is an apocalyptic number.

It is an amenable number.

16172317345 is a deficient number, since it is larger than the sum of its proper divisors (4376038919).

16172317345 is a wasteful number, since it uses less digits than its factorization.

16172317345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190262579.

The product of its digits is 105840, while the sum is 40.

The spelling of 16172317345 in words is "sixteen billion, one hundred seventy-two million, three hundred seventeen thousand, three hundred forty-five".