55534820863 has 4 divisors (see below), whose sum is σ = 55535327848. Its totient is φ = 55534313880.

The previous prime is 55534820849. The next prime is 55534820911. The reversal of 55534820863 is 36802843555.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 36802843555 = 5 ⋅7360568711.

It is a cyclic number.

It is not a de Polignac number, because 55534820863 - 2³³ = 46944886271 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 (55534820063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13353 + ... + 333538.

It is an arithmetic number, because the mean of its divisors is an integer number (13883831962).

Almost surely, 2^55534820863 is an apocalyptic number.

55534820863 is a deficient number, since it is larger than the sum of its proper divisors (506985).

55534820863 is a wasteful number, since it uses less digits than its factorization.

55534820863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506984.

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 55534820863 in words is "fifty-five billion, five hundred thirty-four million, eight hundred twenty thousand, eight hundred sixty-three".