166281171616 has 48 divisors (see below), whose sum is σ = 387033776640. Its totient is φ = 68805999360.

The previous prime is 166281171607. The next prime is 166281171629. The reversal of 166281171616 is 616171182661.

166281171616 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12792240 + ... + 12805231.

It is an arithmetic number, because the mean of its divisors is an integer number (8063203680).

Almost surely, 2^166281171616 is an apocalyptic number.

166281171616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166281171616 is an abundant number, since it is smaller than the sum of its proper divisors (220752605024).

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

166281171616 is a wasteful number, since it uses less digits than its factorization.

166281171616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25597517 (or 25597509 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The spelling of 166281171616 in words is "one hundred sixty-six billion, two hundred eighty-one million, one hundred seventy-one thousand, six hundred sixteen".