172216686867 has 8 divisors (see below), whose sum is σ = 229826725824. Its totient is φ = 114708886248.

The previous prime is 172216686853. The next prime is 172216686871. The reversal of 172216686867 is 768686612271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172216686867 - 2¹¹ = 172216684819 is a prime.

It is a super-3 number, since 3×172216686867³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172216686867.

It is not an unprimeable number, because it can be changed into a prime (172216686827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25555653 + ... + 25562390.

It is an arithmetic number, because the mean of its divisors is an integer number (28728340728).

Almost surely, 2^172216686867 is an apocalyptic number.

172216686867 is a deficient number, since it is larger than the sum of its proper divisors (57610038957).

172216686867 is a wasteful number, since it uses less digits than its factorization.

172216686867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51119169.

The product of its digits is 16257024, while the sum is 60.

The spelling of 172216686867 in words is "one hundred seventy-two billion, two hundred sixteen million, six hundred eighty-six thousand, eight hundred sixty-seven".