172649782944 has 144 divisors (see below), whose sum is σ = 498914331552. Its totient is φ = 56621182464.

The previous prime is 172649782927. The next prime is 172649782957. The reversal of 172649782944 is 449287946271.

172649782944 is a `hidden beast` number, since 1 + 7 + 26 + 497 + 82 + 9 + 44 = 666.

172649782944 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×172649782944² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17033302 + ... + 17043434.

It is an arithmetic number, because the mean of its divisors is an integer number (3464682858).

Almost surely, 2^172649782944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172649782944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249457165776).

172649782944 is an abundant number, since it is smaller than the sum of its proper divisors (326264548608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172649782944 is a wasteful number, since it uses less digits than its factorization.

172649782944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11099 (or 11088 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 172649782944 in words is "one hundred seventy-two billion, six hundred forty-nine million, seven hundred eighty-two thousand, nine hundred forty-four".