2256666412543 has 2 divisors, whose sum is σ = 2256666412544. Its totient is φ = 2256666412542.

The previous prime is 2256666412501. The next prime is 2256666412573. The reversal of 2256666412543 is 3452146666522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2256666412543 - 2¹³ = 2256666404351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2256666412573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128333206271 + 1128333206272.

It is an arithmetic number, because the mean of its divisors is an integer number (1128333206272).

Almost surely, 2^{2256666412543} is an apocalyptic number.

2256666412543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256666412543 is an equidigital number, since it uses as much as digits as its factorization.

2256666412543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12441600, while the sum is 52.

The spelling of 2256666412543 in words is "two trillion, two hundred fifty-six billion, six hundred sixty-six million, four hundred twelve thousand, five hundred forty-three".