166019950266 has 8 divisors (see below), whose sum is σ = 332039900544. Its totient is φ = 55339983420.

The previous prime is 166019950241. The next prime is 166019950297. The reversal of 166019950266 is 662059910661.

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

166019950266 is an admirable number.

It is a super-2 number, since 2×166019950266² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13834995850 + ... + 13834995861.

It is an arithmetic number, because the mean of its divisors is an integer number (41504987568).

Almost surely, 2^166019950266 is an apocalyptic number.

166019950266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166019950266 is a wasteful number, since it uses less digits than its factorization.

166019950266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27669991716.

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 166019950266 in words is "one hundred sixty-six billion, nineteen million, nine hundred fifty thousand, two hundred sixty-six".