166551550226 has 16 divisors (see below), whose sum is σ = 252415747584. Its totient is φ = 82414012224.

The previous prime is 166551550219. The next prime is 166551550247. The reversal of 166551550226 is 622055155661.

It is a Curzon number.

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, 59615 + ... + 580221.

It is an arithmetic number, because the mean of its divisors is an integer number (15775984224).

Almost surely, 2^166551550226 is an apocalyptic number.

166551550226 is a deficient number, since it is larger than the sum of its proper divisors (85864197358).

166551550226 is a wasteful number, since it uses less digits than its factorization.

166551550226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522265.

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 166551550226 in words is "one hundred sixty-six billion, five hundred fifty-one million, five hundred fifty thousand, two hundred twenty-six".