5555554444444 has 48 divisors (see below), whose sum is σ = 9983629910016. Its totient is φ = 2703745569600.

The previous prime is 5555554444411. The next prime is 5555554444459. The reversal of 5555554444444 is 4444444555555.

It is a happy number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

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, 156648874 + ... + 156684334.

It is an arithmetic number, because the mean of its divisors is an integer number (207992289792).

Almost surely, 2^{5555554444444} is an apocalyptic number.

It is an amenable number.

5555554444444 is a deficient number, since it is larger than the sum of its proper divisors (4428075465572).

5555554444444 is a wasteful number, since it uses less digits than its factorization.

5555554444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40066 (or 40064 counting only the distinct ones).

The product of its digits is 256000000, while the sum is 58.

Adding to 5555554444444 its reverse (4444444555555), we get a palindrome (9999998999999).

The spelling of 5555554444444 in words is "five trillion, five hundred fifty-five billion, five hundred fifty-four million, four hundred forty-four thousand, four hundred forty-four".