6641002500 has 240 divisors, whose sum is σ = 21359612736. Its totient is φ = 1592000000.

The previous prime is 6641002481. The next prime is 6641002549. The reversal of 6641002500 is 52001466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8332102 + ... + 8332898.

Almost surely, 2^6641002500 is an apocalyptic number.

6641002500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6641002500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10679806368).

6641002500 is an abundant number, since it is smaller than the sum of its proper divisors (14718610236).

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

6641002500 is a wasteful number, since it uses less digits than its factorization.

6641002500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 6641002500 is about 81492.3462663826. The cubic root of 6641002500 is about 1879.6538615043.

Adding to 6641002500 its reverse (52001466), we get a palindrome (6693003966).

The spelling of 6641002500 in words is "six billion, six hundred forty-one million, two thousand, five hundred".