166916683446 has 16 divisors (see below), whose sum is σ = 353470623984. Its totient is φ = 52366018304.

The previous prime is 166916683441. The next prime is 166916683489. The reversal of 166916683446 is 644386619661.

It is a happy number.

It is a super-2 number, since 2×166916683446² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166916683446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166916683441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818218935 + ... + 818219138.

It is an arithmetic number, because the mean of its divisors is an integer number (22091913999).

Almost surely, 2^166916683446 is an apocalyptic number.

166916683446 is an abundant number, since it is smaller than the sum of its proper divisors (186553940538).

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

166916683446 is a wasteful number, since it uses less digits than its factorization.

166916683446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636438095.

The product of its digits is 26873856, while the sum is 60.

The spelling of 166916683446 in words is "one hundred sixty-six billion, nine hundred sixteen million, six hundred eighty-three thousand, four hundred forty-six".