166671395652 has 12 divisors (see below), whose sum is σ = 388899923216. Its totient is φ = 55557131880.

The previous prime is 166671395609. The next prime is 166671395677. The reversal of 166671395652 is 256593176661.

166671395652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 166671395592 and 166671395601.

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, 6944641474 + ... + 6944641497.

Almost surely, 2^166671395652 is an apocalyptic number.

166671395652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166671395652 is an abundant number, since it is smaller than the sum of its proper divisors (222228527564).

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

166671395652 is a wasteful number, since it uses less digits than its factorization.

166671395652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13889282978 (or 13889282976 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 57.

The spelling of 166671395652 in words is "one hundred sixty-six billion, six hundred seventy-one million, three hundred ninety-five thousand, six hundred fifty-two".