166212006456 has 32 divisors (see below), whose sum is σ = 419207279760. Its totient is φ = 54913700352.

The previous prime is 166212006449. The next prime is 166212006491. The reversal of 166212006456 is 654600212661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30641095 + ... + 30646518.

Almost surely, 2^166212006456 is an apocalyptic number.

It is an amenable number.

166212006456 is an abundant number, since it is smaller than the sum of its proper divisors (252995273304).

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

166212006456 is a wasteful number, since it uses less digits than its factorization.

166212006456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61287735 (or 61287731 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 166212006456 in words is "one hundred sixty-six billion, two hundred twelve million, six thousand, four hundred fifty-six".