53566066393 has 16 divisors (see below), whose sum is σ = 61844529024. Its totient is φ = 45444441600.

The previous prime is 53566066357. The next prime is 53566066399. The reversal of 53566066393 is 39366066535.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53566066393 - 2¹⁷ = 53565935321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53566066393.

It is not an unprimeable number, because it can be changed into a prime (53566066399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2546746 + ... + 2567692.

It is an arithmetic number, because the mean of its divisors is an integer number (3865283064).

Almost surely, 2^53566066393 is an apocalyptic number.

It is an amenable number.

53566066393 is a deficient number, since it is larger than the sum of its proper divisors (8278462631).

53566066393 is a wasteful number, since it uses less digits than its factorization.

53566066393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24672.

The product of its (nonzero) digits is 7873200, while the sum is 52.

The spelling of 53566066393 in words is "fifty-three billion, five hundred sixty-six million, sixty-six thousand, three hundred ninety-three".