166543263743 has 8 divisors (see below), whose sum is σ = 173824264656. Its totient is φ = 159415547200.

The previous prime is 166543263721. The next prime is 166543263791. The reversal of 166543263743 is 347362345661.

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 166543263743 - 2⁸ = 166543263487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166543263691 and 166543263700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166543263703) 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, 38318873 + ... + 38323218.

It is an arithmetic number, because the mean of its divisors is an integer number (21728033082).

Almost surely, 2^166543263743 is an apocalyptic number.

166543263743 is a deficient number, since it is larger than the sum of its proper divisors (7281000913).

166543263743 is an equidigital number, since it uses as much as digits as its factorization.

166543263743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76642185.

The product of its digits is 6531840, while the sum is 50.

The spelling of 166543263743 in words is "one hundred sixty-six billion, five hundred forty-three million, two hundred sixty-three thousand, seven hundred forty-three".