55804433440855 has 16 divisors (see below), whose sum is σ = 77350316300064. Its totient is φ = 38197687060480.

The previous prime is 55804433440849. The next prime is 55804433440867.

It is a happy number.

55804433440855 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55804433440855 - 2²⁹ = 55803896569943 is a prime.

It is a super-2 number, since 2×55804433440855² (a number of 28 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 55804433440855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29841942082 + ... + 29841943951.

It is an arithmetic number, because the mean of its divisors is an integer number (4834394768754).

Almost surely, 2^{55804433440855} is an apocalyptic number.

55804433440855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55804433440855 is a deficient number, since it is larger than the sum of its proper divisors (21545882859209).

55804433440855 is a wasteful number, since it uses less digits than its factorization.

55804433440855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59683886066.

The product of its (nonzero) digits is 92160000, while the sum is 58.

The spelling of 55804433440855 in words is "fifty-five trillion, eight hundred four billion, four hundred thirty-three million, four hundred forty thousand, eight hundred fifty-five".