2421040664 has 16 divisors (see below), whose sum is σ = 5187944400. Its totient is φ = 1037588832.

The previous prime is 2421040639. The next prime is 2421040673. The reversal of 2421040664 is 4660401242.

It is a happy number.

It is a super-2 number, since 2×2421040664² = 11722875793483121792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 21616379 + ... + 21616490.

It is an arithmetic number, because the mean of its divisors is an integer number (324246525).

Almost surely, 2^2421040664 is an apocalyptic number.

It is an amenable number.

2421040664 is an abundant number, since it is smaller than the sum of its proper divisors (2766903736).

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

2421040664 is a wasteful number, since it uses less digits than its factorization.

2421040664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43232882 (or 43232878 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 2421040664 is about 49204.0716201414. The cubic root of 2421040664 is about 1342.7671088788.

The spelling of 2421040664 in words is "two billion, four hundred twenty-one million, forty thousand, six hundred sixty-four".