55490218044 has 24 divisors (see below), whose sum is σ = 130931977680. Its totient is φ = 18288910464.

The previous prime is 55490218033. The next prime is 55490218087. The reversal of 55490218044 is 44081209455.

It is a junction number, because it is equal to n+sod(n) for n = 55490217987 and 55490218005.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25977499 + ... + 25979634.

It is an arithmetic number, because the mean of its divisors is an integer number (5455499070).

Almost surely, 2^55490218044 is an apocalyptic number.

It is an amenable number.

55490218044 is an abundant number, since it is smaller than the sum of its proper divisors (75441759636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55490218044 is a wasteful number, since it uses less digits than its factorization.

55490218044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51957229 (or 51957227 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 55490218044 in words is "fifty-five billion, four hundred ninety million, two hundred eighteen thousand, forty-four".