172287584417 has 4 divisors (see below), whose sum is σ = 185540475540. Its totient is φ = 159034693296.

The previous prime is 172287584389. The next prime is 172287584459. The reversal of 172287584417 is 714485782271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48844978081 + 123442606336 = 221009^2 + 351344^2 .

It is a cyclic number.

It is not a de Polignac number, because 172287584417 - 2¹² = 172287580321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172287584467) 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, 6626445542 + ... + 6626445567.

It is an arithmetic number, because the mean of its divisors is an integer number (46385118885).

Almost surely, 2^172287584417 is an apocalyptic number.

It is an amenable number.

172287584417 is a deficient number, since it is larger than the sum of its proper divisors (13252891123).

172287584417 is a wasteful number, since it uses less digits than its factorization.

172287584417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13252891122.

The product of its digits is 7024640, while the sum is 56.

The spelling of 172287584417 in words is "one hundred seventy-two billion, two hundred eighty-seven million, five hundred eighty-four thousand, four hundred seventeen".