53785685551 has 16 divisors (see below), whose sum is σ = 58990619520. Its totient is φ = 48735715680.

The previous prime is 53785685539. The next prime is 53785685561. The reversal of 53785685551 is 15558658735.

53785685551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 53785685551 - 2⁹ = 53785685039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53785685561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479256 + ... + 580738.

It is an arithmetic number, because the mean of its divisors is an integer number (3686913720).

Almost surely, 2^53785685551 is an apocalyptic number.

53785685551 is a deficient number, since it is larger than the sum of its proper divisors (5204933969).

53785685551 is a wasteful number, since it uses less digits than its factorization.

53785685551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102246.

The product of its digits is 25200000, while the sum is 58.

The spelling of 53785685551 in words is "fifty-three billion, seven hundred eighty-five million, six hundred eighty-five thousand, five hundred fifty-one".