171216472821280 has 48 divisors (see below), whose sum is σ = 409619156526720. Its totient is φ = 67619670273792.

The previous prime is 171216472821223. The next prime is 171216472821287. The reversal of 171216472821280 is 82128274612171.

It is a super-2 number, since 2×171216472821280² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (171216472821287) 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, 6772790874 + ... + 6772816153.

It is an arithmetic number, because the mean of its divisors is an integer number (8533732427640).

Almost surely, 2^{171216472821280} is an apocalyptic number.

171216472821280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171216472821280 is an abundant number, since it is smaller than the sum of its proper divisors (238402683705440).

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

171216472821280 is a wasteful number, since it uses less digits than its factorization.

171216472821280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13545607121 (or 13545607113 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 52.

The spelling of 171216472821280 in words is "one hundred seventy-one trillion, two hundred sixteen billion, four hundred seventy-two million, eight hundred twenty-one thousand, two hundred eighty".