166871717052 has 24 divisors (see below), whose sum is σ = 412271301456. Its totient is φ = 52351911168.

The previous prime is 166871717041. The next prime is 166871717093. The reversal of 166871717052 is 250717178661.

166871717052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×166871717052³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 166871716986 and 166871717004.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 408999103 + ... + 408999510.

It is an arithmetic number, because the mean of its divisors is an integer number (17177970894).

Almost surely, 2^166871717052 is an apocalyptic number.

166871717052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166871717052 is an abundant number, since it is smaller than the sum of its proper divisors (245399584404).

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

166871717052 is a wasteful number, since it uses less digits than its factorization.

166871717052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817998637 (or 817998635 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 51.

The spelling of 166871717052 in words is "one hundred sixty-six billion, eight hundred seventy-one million, seven hundred seventeen thousand, fifty-two".