56566551133 has 2 divisors, whose sum is σ = 56566551134. Its totient is φ = 56566551132.

The previous prime is 56566551109. The next prime is 56566551191. The reversal of 56566551133 is 33115566565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56466591129 + 99960004 = 237627^2 + 9998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56566551133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56566551193) 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, 28283275566 + 28283275567.

It is an arithmetic number, because the mean of its divisors is an integer number (28283275567).

Almost surely, 2^56566551133 is an apocalyptic number.

It is an amenable number.

56566551133 is a deficient number, since it is larger than the sum of its proper divisors (1).

56566551133 is an equidigital number, since it uses as much as digits as its factorization.

56566551133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1215000, while the sum is 46.

The spelling of 56566551133 in words is "fifty-six billion, five hundred sixty-six million, five hundred fifty-one thousand, one hundred thirty-three".