172423642006647 has 16 divisors (see below), whose sum is σ = 260877377978880. Its totient is φ = 112503369251736.

The previous prime is 172423642006613. The next prime is 172423642006669. The reversal of 172423642006647 is 746600246324271.

172423642006647 is a `hidden beast` number, since 1 + 7 + 2 + 423 + 6 + 4 + 200 + 6 + 6 + 4 + 7 = 666.

It is not a de Polignac number, because 172423642006647 - 2³⁴ = 172406462137463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172423642006593 and 172423642006602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172423642806647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67936815913 + ... + 67936818450.

It is an arithmetic number, because the mean of its divisors is an integer number (16304836123680).

Almost surely, 2^{172423642006647} is an apocalyptic number.

172423642006647 is a deficient number, since it is larger than the sum of its proper divisors (88453735972233).

172423642006647 is a wasteful number, since it uses less digits than its factorization.

172423642006647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135873634419 (or 135873634413 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 54.

The spelling of 172423642006647 in words is "one hundred seventy-two trillion, four hundred twenty-three billion, six hundred forty-two million, six thousand, six hundred forty-seven".