6642133603 has 20 divisors (see below), whose sum is σ = 7763274008. Its totient is φ = 5682549600.

The previous prime is 6642133571. The next prime is 6642133607. The reversal of 6642133603 is 3063312466.

It is not a de Polignac number, because 6642133603 - 2⁵ = 6642133571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6642133607) 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 19 ways as a sum of consecutive naturals, for example, 1440700 + ... + 1445302.

Almost surely, 2^6642133603 is an apocalyptic number.

6642133603 is a deficient number, since it is larger than the sum of its proper divisors (1121140405).

6642133603 is an frugal number, since it uses more digits than its factorization.

6642133603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5232 (or 5211 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 34.

The square root of 6642133603 is about 81499.2859048470. The cubic root of 6642133603 is about 1879.7605703648.

The spelling of 6642133603 in words is "six billion, six hundred forty-two million, one hundred thirty-three thousand, six hundred three".