166533100401 has 16 divisors (see below), whose sum is σ = 223664537600. Its totient is φ = 110212029648.

The previous prime is 166533100373. The next prime is 166533100429. The reversal of 166533100401 is 104001335661.

166533100401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166533100373) and next prime (166533100429).

It is not a de Polignac number, because 166533100401 - 2⁶ = 166533100337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166533100441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6625680 + ... + 6650766.

It is an arithmetic number, because the mean of its divisors is an integer number (13979033600).

Almost surely, 2^166533100401 is an apocalyptic number.

It is an amenable number.

166533100401 is a deficient number, since it is larger than the sum of its proper divisors (57131437199).

166533100401 is a wasteful number, since it uses less digits than its factorization.

166533100401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41148.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 166533100401 in words is "one hundred sixty-six billion, five hundred thirty-three million, one hundred thousand, four hundred one".