166427642112 has 36 divisors (see below), whose sum is σ = 442940237040. Its totient is φ = 55475880448.

The previous prime is 166427642053. The next prime is 166427642131. The reversal of 166427642112 is 211246724661.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108350562 + ... + 108352097.

Almost surely, 2^166427642112 is an apocalyptic number.

166427642112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166427642112 is an abundant number, since it is smaller than the sum of its proper divisors (276512594928).

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

166427642112 is an equidigital number, since it uses as much as digits as its factorization.

166427642112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216702678 (or 216702664 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The spelling of 166427642112 in words is "one hundred sixty-six billion, four hundred twenty-seven million, six hundred forty-two thousand, one hundred twelve".