2421056536513 has 4 divisors (see below), whose sum is σ = 2425869770688. Its totient is φ = 2416243302340.

The previous prime is 2421056536453. The next prime is 2421056536603. The reversal of 2421056536513 is 3156356501242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2421056536513 - 2²¹ = 2421054439361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2421056536513.

It is not an unprimeable number, because it can be changed into a prime (2421056537513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2406616333 + ... + 2406617338.

It is an arithmetic number, because the mean of its divisors is an integer number (606467442672).

Almost surely, 2^{2421056536513} is an apocalyptic number.

It is an amenable number.

2421056536513 is a deficient number, since it is larger than the sum of its proper divisors (4813234175).

2421056536513 is an equidigital number, since it uses as much as digits as its factorization.

2421056536513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4813234174.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 2421056536513 in words is "two trillion, four hundred twenty-one billion, fifty-six million, five hundred thirty-six thousand, five hundred thirteen".