166210442412 has 24 divisors (see below), whose sum is σ = 443227846656. Its totient is φ = 47488697808.

The previous prime is 166210442401. The next prime is 166210442417. The reversal of 166210442412 is 214244012661.

It is a super-2 number, since 2×166210442412² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166210442417) 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, 989347788 + ... + 989347955.

It is an arithmetic number, because the mean of its divisors is an integer number (18467826944).

Almost surely, 2^166210442412 is an apocalyptic number.

166210442412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166210442412 is an abundant number, since it is smaller than the sum of its proper divisors (277017404244).

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

166210442412 is a wasteful number, since it uses less digits than its factorization.

166210442412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978695757 (or 1978695755 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The spelling of 166210442412 in words is "one hundred sixty-six billion, two hundred ten million, four hundred forty-two thousand, four hundred twelve".