55393243863 has 16 divisors (see below), whose sum is σ = 76238886240. Its totient is φ = 35748349056.

The previous prime is 55393243847. The next prime is 55393243903. The reversal of 55393243863 is 36834239355.

It is not a de Polignac number, because 55393243863 - 2⁴ = 55393243847 is a prime.

It is a super-2 number, since 2×55393243863² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55393243063) 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, 1244728 + ... + 1288461.

It is an arithmetic number, because the mean of its divisors is an integer number (4764930390).

Almost surely, 2^55393243863 is an apocalyptic number.

55393243863 is a deficient number, since it is larger than the sum of its proper divisors (20845642377).

55393243863 is a wasteful number, since it uses less digits than its factorization.

55393243863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533426.

The product of its digits is 6998400, while the sum is 51.

It can be divided in two parts, 553932 and 43863, that added together give a palindrome (597795).

The spelling of 55393243863 in words is "fifty-five billion, three hundred ninety-three million, two hundred forty-three thousand, eight hundred sixty-three".