2421430636656 has 20 divisors (see below), whose sum is σ = 6255362478152. Its totient is φ = 807143545536.

The previous prime is 2421430636637. The next prime is 2421430636673. The reversal of 2421430636656 is 6566360341242.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 50446471597 = 2421430636656 / (2 + 4 + 2 + 1 + 4 + 3 + 0 + 6 + 3 + 6 + 6 + 5 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25223235751 + ... + 25223235846.

Almost surely, 2^{2421430636656} is an apocalyptic number.

It is an amenable number.

2421430636656 is an abundant number, since it is smaller than the sum of its proper divisors (3833931841496).

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

2421430636656 is a wasteful number, since it uses less digits than its factorization.

2421430636656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50446471608 (or 50446471602 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 48.

Adding to 2421430636656 its reverse (6566360341242), we get a palindrome (8987790977898).

The spelling of 2421430636656 in words is "two trillion, four hundred twenty-one billion, four hundred thirty million, six hundred thirty-six thousand, six hundred fifty-six".