172400442560 has 28 divisors (see below), whose sum is σ = 410528554608. Its totient is φ = 68960176896.

The previous prime is 172400442553. The next prime is 172400442583. The reversal of 172400442560 is 65244004271.

It is a happy number.

172400442560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 172400442560.

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 3 ways as a sum of consecutive naturals, for example, 269375372 + ... + 269376011.

Almost surely, 2^172400442560 is an apocalyptic number.

172400442560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172400442560 is an abundant number, since it is smaller than the sum of its proper divisors (238128112048).

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

172400442560 is an equidigital number, since it uses as much as digits as its factorization.

172400442560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538751400 (or 538751390 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 172400442560 in words is "one hundred seventy-two billion, four hundred million, four hundred forty-two thousand, five hundred sixty".