166556151012 has 24 divisors (see below), whose sum is σ = 391691109376. Its totient is φ = 55081561248.

The previous prime is 166556150983. The next prime is 166556151059. The reversal of 166556151012 is 210151655661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54642883 + ... + 54645930.

Almost surely, 2^166556151012 is an apocalyptic number.

166556151012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166556151012 is an abundant number, since it is smaller than the sum of its proper divisors (225134958364).

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

166556151012 is a wasteful number, since it uses less digits than its factorization.

166556151012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109288947 (or 109288945 counting only the distinct ones).

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

The spelling of 166556151012 in words is "one hundred sixty-six billion, five hundred fifty-six million, one hundred fifty-one thousand, twelve".