6603181872 has 160 divisors (see below), whose sum is σ = 21413867520. Its totient is φ = 1709579520.

The previous prime is 6603181859. The next prime is 6603181873. The reversal of 6603181872 is 2781813066.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (6603181873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124347 + ... + 169317.

It is an arithmetic number, because the mean of its divisors is an integer number (133836672).

Almost surely, 2^6603181872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6603181872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10706933760).

6603181872 is an abundant number, since it is smaller than the sum of its proper divisors (14810685648).

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

6603181872 is a wasteful number, since it uses less digits than its factorization.

6603181872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45031 (or 45025 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 6603181872 is about 81259.9647550994. The cubic root of 6603181872 is about 1876.0788455124.

The spelling of 6603181872 in words is "six billion, six hundred three million, one hundred eighty-one thousand, eight hundred seventy-two".