166461083412 has 72 divisors (see below), whose sum is σ = 444339411936. Its totient is φ = 48205911552.

The previous prime is 166461083387. The next prime is 166461083417. The reversal of 166461083412 is 214380164661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166461083417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1801038 + ... + 1891205.

Almost surely, 2^166461083412 is an apocalyptic number.

166461083412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166461083412 is an abundant number, since it is smaller than the sum of its proper divisors (277878328524).

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

166461083412 is a wasteful number, since it uses less digits than its factorization.

166461083412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692297 (or 3692278 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 166461083412 in words is "one hundred sixty-six billion, four hundred sixty-one million, eighty-three thousand, four hundred twelve".