56709395543 has 2 divisors, whose sum is σ = 56709395544. Its totient is φ = 56709395542.

The previous prime is 56709395531. The next prime is 56709395569. The reversal of 56709395543 is 34559390765.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56709395543 - 2¹⁸ = 56709133399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56709395143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28354697771 + 28354697772.

It is an arithmetic number, because the mean of its divisors is an integer number (28354697772).

Almost surely, 2^56709395543 is an apocalyptic number.

56709395543 is a deficient number, since it is larger than the sum of its proper divisors (1).

56709395543 is an equidigital number, since it uses as much as digits as its factorization.

56709395543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309000, while the sum is 56.

The spelling of 56709395543 in words is "fifty-six billion, seven hundred nine million, three hundred ninety-five thousand, five hundred forty-three".