166227856626 has 64 divisors (see below), whose sum is σ = 359239547520. Its totient is φ = 50974410240.

The previous prime is 166227856577. The next prime is 166227856661. The reversal of 166227856626 is 626658722661.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39009336 + ... + 39013596.

It is an arithmetic number, because the mean of its divisors is an integer number (5613117930).

Almost surely, 2^166227856626 is an apocalyptic number.

166227856626 is an abundant number, since it is smaller than the sum of its proper divisors (193011690894).

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

166227856626 is a wasteful number, since it uses less digits than its factorization.

166227856626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5851.

The product of its digits is 17418240, while the sum is 57.

The spelling of 166227856626 in words is "one hundred sixty-six billion, two hundred twenty-seven million, eight hundred fifty-six thousand, six hundred twenty-six".