2681223400543 has 2 divisors, whose sum is σ = 2681223400544. Its totient is φ = 2681223400542.

The previous prime is 2681223400529. The next prime is 2681223400549. The reversal of 2681223400543 is 3450043221862.

It is a happy number.

2681223400543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2681223400543 - 2³³ = 2672633465951 is a prime.

It is a super-2 number, since 2×2681223400543² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2681223400496 and 2681223400505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2681223400549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1340611700271 + 1340611700272.

It is an arithmetic number, because the mean of its divisors is an integer number (1340611700272).

Almost surely, 2^{2681223400543} is an apocalyptic number.

2681223400543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2681223400543 is an equidigital number, since it uses as much as digits as its factorization.

2681223400543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 2681223400543 in words is "two trillion, six hundred eighty-one billion, two hundred twenty-three million, four hundred thousand, five hundred forty-three".