55438314444 has 72 divisors (see below), whose sum is σ = 145039032320. Its totient is φ = 17836005600.

The previous prime is 55438314427. The next prime is 55438314469. The reversal of 55438314444 is 44441383455.

55438314444 is a `hidden beast` number, since 554 + 3 + 83 + 14 + 4 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 55438314444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 357429 + ... + 488499.

Almost surely, 2^55438314444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55438314444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72519516160).

55438314444 is an abundant number, since it is smaller than the sum of its proper divisors (89600717876).

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

55438314444 is a wasteful number, since it uses less digits than its factorization.

55438314444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131491 (or 131486 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 45.

Adding to 55438314444 its reverse (44441383455), we get a palindrome (99879697899).

The spelling of 55438314444 in words is "fifty-five billion, four hundred thirty-eight million, three hundred fourteen thousand, four hundred forty-four".