172213107665 has 16 divisors (see below), whose sum is σ = 207012672000. Its totient is φ = 137532658752.

The previous prime is 172213107559. The next prime is 172213107673. The reversal of 172213107665 is 566701312271.

172213107665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172213107665 is a prime.

It is a super-3 number, since 3×172213107665³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14169011 + ... + 14181159.

It is an arithmetic number, because the mean of its divisors is an integer number (12938292000).

Almost surely, 2^172213107665 is an apocalyptic number.

It is an amenable number.

172213107665 is a deficient number, since it is larger than the sum of its proper divisors (34799564335).

172213107665 is a wasteful number, since it uses less digits than its factorization.

172213107665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16816.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 172213107665 in words is "one hundred seventy-two billion, two hundred thirteen million, one hundred seven thousand, six hundred sixty-five".