2556352321343 has 2 divisors, whose sum is σ = 2556352321344. Its totient is φ = 2556352321342.

The previous prime is 2556352321333. The next prime is 2556352321349. The reversal of 2556352321343 is 3431232536552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2556352321343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2556352321294 and 2556352321303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2556352321349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278176160671 + 1278176160672.

It is an arithmetic number, because the mean of its divisors is an integer number (1278176160672).

Almost surely, 2^{2556352321343} is an apocalyptic number.

2556352321343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556352321343 is an equidigital number, since it uses as much as digits as its factorization.

2556352321343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944000, while the sum is 44.

Adding to 2556352321343 its reverse (3431232536552), we get a palindrome (5987584857895).

The spelling of 2556352321343 in words is "two trillion, five hundred fifty-six billion, three hundred fifty-two million, three hundred twenty-one thousand, three hundred forty-three".