172227470517 has 6 divisors (see below), whose sum is σ = 248773012982. Its totient is φ = 114818313672.

The previous prime is 172227470461. The next prime is 172227470531. The reversal of 172227470517 is 715074722271.

172227470517 is a `hidden beast` number, since 1 + 72 + 2 + 27 + 47 + 0 + 517 = 666.

It can be written as a sum of positive squares in only one way, i.e., 105573656241 + 66653814276 = 324921^2 + 258174^2 .

It is not a de Polignac number, because 172227470517 - 2¹² = 172227466421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172227470557) 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 5 ways as a sum of consecutive naturals, for example, 9568192798 + ... + 9568192815.

Almost surely, 2^172227470517 is an apocalyptic number.

It is an amenable number.

172227470517 is a deficient number, since it is larger than the sum of its proper divisors (76545542465).

172227470517 is a wasteful number, since it uses less digits than its factorization.

172227470517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19136385619 (or 19136385616 counting only the distinct ones).

The product of its (nonzero) digits is 384160, while the sum is 45.

The spelling of 172227470517 in words is "one hundred seventy-two billion, two hundred twenty-seven million, four hundred seventy thousand, five hundred seventeen".