166155506112 has 28 divisors (see below), whose sum is σ = 439619777096. Its totient is φ = 55385168640.

The previous prime is 166155506093. The next prime is 166155506131. The reversal of 166155506112 is 211605551661.

166155506112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166155506093) and next prime (166155506131).

It is a super-2 number, since 2×166155506112² (a number of 23 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 432696439 + ... + 432696822.

Almost surely, 2^166155506112 is an apocalyptic number.

166155506112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166155506112 is an abundant number, since it is smaller than the sum of its proper divisors (273464270984).

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

166155506112 is an equidigital number, since it uses as much as digits as its factorization.

166155506112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865393276 (or 865393266 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 39.

The spelling of 166155506112 in words is "one hundred sixty-six billion, one hundred fifty-five million, five hundred six thousand, one hundred twelve".