166641967763 has 8 divisors (see below), whose sum is σ = 171935352000. Its totient is φ = 161428183488.

The previous prime is 166641967711. The next prime is 166641967769. The reversal of 166641967763 is 367769146661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166641967763 - 2⁸ = 166641967507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166641967696 and 166641967705.

It is not an unprimeable number, because it can be changed into a prime (166641967769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19895738 + ... + 19904111.

It is an arithmetic number, because the mean of its divisors is an integer number (21491919000).

Almost surely, 2^166641967763 is an apocalyptic number.

166641967763 is a deficient number, since it is larger than the sum of its proper divisors (5293384237).

166641967763 is an equidigital number, since it uses as much as digits as its factorization.

166641967763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39799981.

The product of its digits is 41150592, while the sum is 62.

The spelling of 166641967763 in words is "one hundred sixty-six billion, six hundred forty-one million, nine hundred sixty-seven thousand, seven hundred sixty-three".