55881418855 has 4 divisors (see below), whose sum is σ = 67057702632. Its totient is φ = 44705135080.

The previous prime is 55881418819. The next prime is 55881418867.

55881418855 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 55881418855 - 2¹⁷ = 55881287783 is a prime.

It is a super-2 number, since 2×55881418855² (a number of 22 digits) contains 22 as substring.

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 55881418855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5588141881 + ... + 5588141890.

It is an arithmetic number, because the mean of its divisors is an integer number (16764425658).

Almost surely, 2^55881418855 is an apocalyptic number.

55881418855 is a deficient number, since it is larger than the sum of its proper divisors (11176283777).

55881418855 is a wasteful number, since it uses less digits than its factorization.

55881418855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11176283776.

The product of its digits is 10240000, while the sum is 58.

The spelling of 55881418855 in words is "fifty-five billion, eight hundred eighty-one million, four hundred eighteen thousand, eight hundred fifty-five".