166542233603303 has 16 divisors (see below), whose sum is σ = 167951510138880. Its totient is φ = 165139097162400.

The previous prime is 166542233603299. The next prime is 166542233603309. The reversal of 166542233603303 is 303306332245661.

It is a happy number.

166542233603303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 166542233603303 - 2² = 166542233603299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166542233603309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116010326 + ... + 117437132.

It is an arithmetic number, because the mean of its divisors is an integer number (10496969383680).

Almost surely, 2^{166542233603303} is an apocalyptic number.

166542233603303 is a deficient number, since it is larger than the sum of its proper divisors (1409276535577).

166542233603303 is a wasteful number, since it uses less digits than its factorization.

166542233603303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428958.

The product of its (nonzero) digits is 4199040, while the sum is 47.

Adding to 166542233603303 its reverse (303306332245661), we get a palindrome (469848565848964).

The spelling of 166542233603303 in words is "one hundred sixty-six trillion, five hundred forty-two billion, two hundred thirty-three million, six hundred three thousand, three hundred three".