6645117504 has 28 divisors (see below), whose sum is σ = 17581873904. Its totient is φ = 2215039104.

The previous prime is 6645117503. The next prime is 6645117593. The reversal of 6645117504 is 4057115466.

It is not an unprimeable number, because it can be changed into a prime (6645117503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17304802 + ... + 17305185.

It is an arithmetic number, because the mean of its divisors is an integer number (627924068).

Almost surely, 2^6645117504 is an apocalyptic number.

6645117504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6645117504 is an abundant number, since it is smaller than the sum of its proper divisors (10936756400).

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

6645117504 is a wasteful number, since it uses less digits than its factorization.

6645117504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34610002 (or 34609992 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 6645117504 is about 81517.5901508380. The cubic root of 6645117504 is about 1880.0420150562.

The spelling of 6645117504 in words is "six billion, six hundred forty-five million, one hundred seventeen thousand, five hundred four".