172166446582 has 16 divisors (see below), whose sum is σ = 278955269712. Its totient is φ = 79221368160.

The previous prime is 172166446549. The next prime is 172166446589. The reversal of 172166446582 is 285644661271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172166446589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9994093 + ... + 10011304.

It is an arithmetic number, because the mean of its divisors is an integer number (17434704357).

Almost surely, 2^172166446582 is an apocalyptic number.

172166446582 is a deficient number, since it is larger than the sum of its proper divisors (106788823130).

172166446582 is a wasteful number, since it uses less digits than its factorization.

172166446582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20005743.

The product of its digits is 3870720, while the sum is 52.

The spelling of 172166446582 in words is "one hundred seventy-two billion, one hundred sixty-six million, four hundred forty-six thousand, five hundred eighty-two".