172113748646 has 32 divisors (see below), whose sum is σ = 296679801600. Its totient is φ = 73357020000.

The previous prime is 172113748619. The next prime is 172113748699. The reversal of 172113748646 is 646847311271.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 172113748594 and 172113748603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2285705 + ... + 2359803.

It is an arithmetic number, because the mean of its divisors is an integer number (9271243800).

Almost surely, 2^172113748646 is an apocalyptic number.

172113748646 is a deficient number, since it is larger than the sum of its proper divisors (124566052954).

172113748646 is a wasteful number, since it uses less digits than its factorization.

172113748646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75020.

The product of its digits is 1354752, while the sum is 50.

The spelling of 172113748646 in words is "one hundred seventy-two billion, one hundred thirteen million, seven hundred forty-eight thousand, six hundred forty-six".