166550011 has 8 divisors (see below), whose sum is σ = 174280064. Its totient is φ = 158967360.

The previous prime is 166549993. The next prime is 166550023. The reversal of 166550011 is 110055661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166550011 - 2¹³ = 166541819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166550081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34536 + ... + 39061.

It is an arithmetic number, because the mean of its divisors is an integer number (21785008).

Almost surely, 2^166550011 is an apocalyptic number.

166550011 is a deficient number, since it is larger than the sum of its proper divisors (7730053).

166550011 is an equidigital number, since it uses as much as digits as its factorization.

166550011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73701.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 166550011 is about 12905.4256419539. The cubic root of 166550011 is about 550.1927820063.

The spelling of 166550011 in words is "one hundred sixty-six million, five hundred fifty thousand, eleven".