166551556156 has 12 divisors (see below), whose sum is σ = 291468230368. Its totient is φ = 83274918912.

The previous prime is 166551556151. The next prime is 166551556169. The reversal of 166551556156 is 651655155661.

166551556156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166551556151) by changing a digit.

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, 449980 + ... + 731836.

Almost surely, 2^166551556156 is an apocalyptic number.

It is an amenable number.

166551556156 is a deficient number, since it is larger than the sum of its proper divisors (124916674212).

166551556156 is a wasteful number, since it uses less digits than its factorization.

166551556156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429588 (or 429586 counting only the distinct ones).

The product of its digits is 4050000, while the sum is 52.

The spelling of 166551556156 in words is "one hundred sixty-six billion, five hundred fifty-one million, five hundred fifty-six thousand, one hundred fifty-six".