2421056537513 has 2 divisors, whose sum is σ = 2421056537514. Its totient is φ = 2421056537512.

The previous prime is 2421056537477. The next prime is 2421056537551. The reversal of 2421056537513 is 3157356501242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1900794388249 + 520262149264 = 1378693^2 + 721292^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421056537513 - 2³⁸ = 2146178630569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2421056537213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210528268756 + 1210528268757.

It is an arithmetic number, because the mean of its divisors is an integer number (1210528268757).

Almost surely, 2^{2421056537513} is an apocalyptic number.

It is an amenable number.

2421056537513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421056537513 is an equidigital number, since it uses as much as digits as its factorization.

2421056537513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 2421056537513 in words is "two trillion, four hundred twenty-one billion, fifty-six million, five hundred thirty-seven thousand, five hundred thirteen".