172471216562 has 6 divisors (see below), whose sum is σ = 258707705823. Its totient is φ = 86235314622.

The previous prime is 172471216513. The next prime is 172471216597. The reversal of 172471216562 is 265612174271.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 86235608281 + 86235608281 = 293659^2 + 293659^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=293659.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 440489 + ... + 734147.

Almost surely, 2^172471216562 is an apocalyptic number.

172471216562 is a deficient number, since it is larger than the sum of its proper divisors (86236489261).

172471216562 is an frugal number, since it uses more digits than its factorization.

172471216562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587320 (or 293661 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The spelling of 172471216562 in words is "one hundred seventy-two billion, four hundred seventy-one million, two hundred sixteen thousand, five hundred sixty-two".