6495021600 has 144 divisors (see below), whose sum is σ = 21188518848. Its totient is φ = 1728138240.

The previous prime is 6495021593. The next prime is 6495021613. The reversal of 6495021600 is 61205946.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1166022 + ... + 1171578.

It is an arithmetic number, because the mean of its divisors is an integer number (147142492).

Almost surely, 2^6495021600 is an apocalyptic number.

6495021600 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 6495021600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10594259424).

6495021600 is an abundant number, since it is smaller than the sum of its proper divisors (14693497248).

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

6495021600 is a wasteful number, since it uses less digits than its factorization.

6495021600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6067 (or 6054 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 6495021600 is about 80591.6968427890. The cubic root of 6495021600 is about 1865.7789968810.

The spelling of 6495021600 in words is "six billion, four hundred ninety-five million, twenty-one thousand, six hundred".