166501001004 has 48 divisors (see below), whose sum is σ = 418461216768. Its totient is φ = 51222005568.

The previous prime is 166501000997. The next prime is 166501001047. The reversal of 166501001004 is 400100105661.

166501001004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 817429 + ... + 1000595.

It is an arithmetic number, because the mean of its divisors is an integer number (8717942016).

Almost surely, 2^166501001004 is an apocalyptic number.

It is an amenable number.

166501001004 is an abundant number, since it is smaller than the sum of its proper divisors (251960215764).

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

166501001004 is a wasteful number, since it uses less digits than its factorization.

166501001004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189014 (or 189012 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 166501001004 its reverse (400100105661), we get a palindrome (566601106665).

The spelling of 166501001004 in words is "one hundred sixty-six billion, five hundred one million, one thousand, four".