172725101720 has 32 divisors (see below), whose sum is σ = 392998132800. Its totient is φ = 68313746688.

The previous prime is 172725101711. The next prime is 172725101771. The reversal of 172725101720 is 27101527271.

172725101720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 24255584 + ... + 24262703.

It is an arithmetic number, because the mean of its divisors is an integer number (12281191650).

Almost surely, 2^172725101720 is an apocalyptic number.

172725101720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172725101720 is an abundant number, since it is smaller than the sum of its proper divisors (220273031080).

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

172725101720 is a wasteful number, since it uses less digits than its factorization.

172725101720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48518387 (or 48518383 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 35.

Adding to 172725101720 its reverse (27101527271), we get a palindrome (199826628991).

The spelling of 172725101720 in words is "one hundred seventy-two billion, seven hundred twenty-five million, one hundred one thousand, seven hundred twenty".