172160216515 has 32 divisors (see below), whose sum is σ = 246735590400. Its totient is φ = 112752841344.

The previous prime is 172160216509. The next prime is 172160216519. The reversal of 172160216515 is 515612061271.

It is a cyclic number.

It is not a de Polignac number, because 172160216515 - 2⁷ = 172160216387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172160216519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387036 + ... + 702934.

It is an arithmetic number, because the mean of its divisors is an integer number (7710487200).

Almost surely, 2^172160216515 is an apocalyptic number.

172160216515 is a deficient number, since it is larger than the sum of its proper divisors (74575373885).

172160216515 is a wasteful number, since it uses less digits than its factorization.

172160216515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316611.

The product of its (nonzero) digits is 25200, while the sum is 37.

Adding to 172160216515 its reverse (515612061271), we get a palindrome (687772277786).

The spelling of 172160216515 in words is "one hundred seventy-two billion, one hundred sixty million, two hundred sixteen thousand, five hundred fifteen".