56745564133 has 2 divisors, whose sum is σ = 56745564134. Its totient is φ = 56745564132.

The previous prime is 56745564119. The next prime is 56745564151. The reversal of 56745564133 is 33146554765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34812842724 + 21932721409 = 186582^2 + 148097^2 .

It is a cyclic number.

It is not a de Polignac number, because 56745564133 - 2²¹ = 56743466981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56745564233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28372782066 + 28372782067.

It is an arithmetic number, because the mean of its divisors is an integer number (28372782067).

Almost surely, 2^56745564133 is an apocalyptic number.

It is an amenable number.

56745564133 is a deficient number, since it is larger than the sum of its proper divisors (1).

56745564133 is an equidigital number, since it uses as much as digits as its factorization.

56745564133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536000, while the sum is 49.

It can be divided in two parts, 5674556 and 4133, that added together give a square (5678689 = 2383²).

The spelling of 56745564133 in words is "fifty-six billion, seven hundred forty-five million, five hundred sixty-four thousand, one hundred thirty-three".