172318486608660 has 144 divisors (see below), whose sum is σ = 585668794467456. Its totient is φ = 37674600784128.

The previous prime is 172318486608613. The next prime is 172318486608691. The reversal of 172318486608660 is 66806684813271.

It is a junction number, because it is equal to n+sod(n) for n = 172318486608591 and 172318486608600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1274100427 + ... + 1274235666.

It is an arithmetic number, because the mean of its divisors is an integer number (4067144406024).

Almost surely, 2^{172318486608660} is an apocalyptic number.

172318486608660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172318486608660 is an abundant number, since it is smaller than the sum of its proper divisors (413350307858796).

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

172318486608660 is a wasteful number, since it uses less digits than its factorization.

172318486608660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548336142 (or 2548336133 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 66.

The spelling of 172318486608660 in words is "one hundred seventy-two trillion, three hundred eighteen billion, four hundred eighty-six million, six hundred eight thousand, six hundred sixty".