2421645336 has 160 divisors (see below), whose sum is σ = 7444316880. Its totient is φ = 729388800.

The previous prime is 2421645269. The next prime is 2421645337. The reversal of 2421645336 is 6335461242.

2421645336 is a `hidden beast` number, since 2 + 4 + 2 + 1 + 645 + 3 + 3 + 6 = 666.

It is a super-5 number, since 5×2421645336⁵ (a number of 48 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2421645336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421645337) 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 39 ways as a sum of consecutive naturals, for example, 1289230 + ... + 1291106.

Almost surely, 2^2421645336 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 2421645336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3722158440).

2421645336 is an abundant number, since it is smaller than the sum of its proper divisors (5022671544).

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

2421645336 is a wasteful number, since it uses less digits than its factorization.

2421645336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087 (or 2074 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 2421645336 is about 49210.2157686796. The cubic root of 2421645336 is about 1342.8788880956.

The spelling of 2421645336 in words is "two billion, four hundred twenty-one million, six hundred forty-five thousand, three hundred thirty-six".