172457826720 has 48 divisors (see below), whose sum is σ = 543242155680. Its totient is φ = 45988753664.

The previous prime is 172457826713. The next prime is 172457826721. The reversal of 172457826720 is 27628754271.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (172457826721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179643090 + ... + 179644049.

It is an arithmetic number, because the mean of its divisors is an integer number (11317544910).

Almost surely, 2^172457826720 is an apocalyptic number.

172457826720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172457826720 is an abundant number, since it is smaller than the sum of its proper divisors (370784328960).

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

172457826720 is a wasteful number, since it uses less digits than its factorization.

172457826720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359287157 (or 359287149 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 51.

The spelling of 172457826720 in words is "one hundred seventy-two billion, four hundred fifty-seven million, eight hundred twenty-six thousand, seven hundred twenty".