2421131636 has 48 divisors (see below), whose sum is σ = 5593214592. Its totient is φ = 887808000.

The previous prime is 2421131599. The next prime is 2421131707. The reversal of 2421131636 is 6361311242.

It is a junction number, because it is equal to n+sod(n) for n = 2421131599 and 2421131608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225965 + ... + 236436.

It is an arithmetic number, because the mean of its divisors is an integer number (116525304).

Almost surely, 2^2421131636 is an apocalyptic number.

It is an amenable number.

2421131636 is an abundant number, since it is smaller than the sum of its proper divisors (3172082956).

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

2421131636 is a wasteful number, since it uses less digits than its factorization.

2421131636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462440 (or 462438 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 2421131636 is about 49204.9960471495. The cubic root of 2421131636 is about 1342.7839270845.

Adding to 2421131636 its reverse (6361311242), we get a palindrome (8782442878).

The spelling of 2421131636 in words is "two billion, four hundred twenty-one million, one hundred thirty-one thousand, six hundred thirty-six".