166641967696 has 40 divisors (see below), whose sum is σ = 347465410344. Its totient is φ = 77134172160.

The previous prime is 166641967607. The next prime is 166641967711. The reversal of 166641967696 is 696769146661.

It can be written as a sum of positive squares in 4 ways, for example, as 226924096 + 166415043600 = 15064^2 + 407940^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5005165 + ... + 5038348.

Almost surely, 2^166641967696 is an apocalyptic number.

166641967696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166641967696 is an abundant number, since it is smaller than the sum of its proper divisors (180823442648).

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

166641967696 is a wasteful number, since it uses less digits than its factorization.

166641967696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10043599 (or 10043593 counting only the distinct ones).

The product of its digits is 105815808, while the sum is 67.

The spelling of 166641967696 in words is "one hundred sixty-six billion, six hundred forty-one million, nine hundred sixty-seven thousand, six hundred ninety-six".