166134663665206 has 32 divisors (see below), whose sum is σ = 250547505868800. Its totient is φ = 82619730426240.

The previous prime is 166134663665167. The next prime is 166134663665207. The reversal of 166134663665206 is 602566366431661.

It is a super-2 number, since 2×166134663665206² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166134663665207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1334041950 + ... + 1334166478.

It is an arithmetic number, because the mean of its divisors is an integer number (7829609558400).

Almost surely, 2^{166134663665206} is an apocalyptic number.

166134663665206 is a deficient number, since it is larger than the sum of its proper divisors (84412842203594).

166134663665206 is a wasteful number, since it uses less digits than its factorization.

166134663665206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128124.

The product of its (nonzero) digits is 100776960, while the sum is 61.

The spelling of 166134663665206 in words is "one hundred sixty-six trillion, one hundred thirty-four billion, six hundred sixty-three million, six hundred sixty-five thousand, two hundred six".