172724205044 has 24 divisors (see below), whose sum is σ = 307961603208. Its totient is φ = 84750310400.

The previous prime is 172724205023. The next prime is 172724205053. The reversal of 172724205044 is 440502427271.

172724205044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 29811475600 + 142912729444 = 172660^2 + 378038^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172724204989 and 172724205007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1846097 + ... + 1937400.

It is an arithmetic number, because the mean of its divisors is an integer number (12831733467).

Almost surely, 2^172724205044 is an apocalyptic number.

It is an amenable number.

172724205044 is a deficient number, since it is larger than the sum of its proper divisors (135237398164).

172724205044 is a wasteful number, since it uses less digits than its factorization.

172724205044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783715 (or 3783713 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 38.

The spelling of 172724205044 in words is "one hundred seventy-two billion, seven hundred twenty-four million, two hundred five thousand, forty-four".