166254006422406 has 64 divisors (see below), whose sum is σ = 386453033049600. Its totient is φ = 46695672930816.

The previous prime is 166254006422393. The next prime is 166254006422407. The reversal of 166254006422406 is 604224600452661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166254006422407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 526647660 + ... + 526963248.

It is an arithmetic number, because the mean of its divisors is an integer number (6038328641400).

Almost surely, 2^{166254006422406} is an apocalyptic number.

166254006422406 is an abundant number, since it is smaller than the sum of its proper divisors (220199026627194).

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

166254006422406 is a wasteful number, since it uses less digits than its factorization.

166254006422406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528253.

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 166254006422406 in words is "one hundred sixty-six trillion, two hundred fifty-four billion, six million, four hundred twenty-two thousand, four hundred six".