53817686443 has 4 divisors (see below), whose sum is σ = 54729850680. Its totient is φ = 52905522208.

The previous prime is 53817686387. The next prime is 53817686467. The reversal of 53817686443 is 34468671835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53817686443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53817686543) 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 3 ways as a sum of consecutive naturals, for example, 456082030 + ... + 456082147.

It is an arithmetic number, because the mean of its divisors is an integer number (13682462670).

Almost surely, 2^53817686443 is an apocalyptic number.

53817686443 is a deficient number, since it is larger than the sum of its proper divisors (912164237).

53817686443 is an equidigital number, since it uses as much as digits as its factorization.

53817686443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912164236.

The product of its digits is 11612160, while the sum is 55.

The spelling of 53817686443 in words is "fifty-three billion, eight hundred seventeen million, six hundred eighty-six thousand, four hundred forty-three".