55542442144 has 48 divisors (see below), whose sum is σ = 125038021248. Its totient is φ = 23791041792.

The previous prime is 55542442127. The next prime is 55542442187. The reversal of 55542442144 is 44124424555.

It is a junction number, because it is equal to n+sod(n) for n = 55542442097 and 55542442106.

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 7 ways as a sum of consecutive naturals, for example, 354397 + ... + 486499.

It is an arithmetic number, because the mean of its divisors is an integer number (2604958776).

Almost surely, 2^55542442144 is an apocalyptic number.

It is an amenable number.

55542442144 is an abundant number, since it is smaller than the sum of its proper divisors (69495579104).

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

55542442144 is a wasteful number, since it uses less digits than its factorization.

55542442144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133997 (or 133989 counting only the distinct ones).

The product of its digits is 512000, while the sum is 40.

Adding to 55542442144 its reverse (44124424555), we get a palindrome (99666866699).

The spelling of 55542442144 in words is "fifty-five billion, five hundred forty-two million, four hundred forty-two thousand, one hundred forty-four".