55005866494440 has 32 divisors (see below), whose sum is σ = 165017599483680. Its totient is φ = 14668231065152.

The previous prime is 55005866494427. The next prime is 55005866494457. The reversal of 55005866494440 is 4449466850055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 229191110274 + ... + 229191110513.

It is an arithmetic number, because the mean of its divisors is an integer number (5156799983865).

Almost surely, 2^{55005866494440} is an apocalyptic number.

It is an amenable number.

55005866494440 is an abundant number, since it is smaller than the sum of its proper divisors (110011732989240).

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

55005866494440 is a wasteful number, since it uses less digits than its factorization.

55005866494440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458382220801 (or 458382220797 counting only the distinct ones).

The product of its (nonzero) digits is 82944000, while the sum is 60.

The spelling of 55005866494440 in words is "fifty-five trillion, five billion, eight hundred sixty-six million, four hundred ninety-four thousand, four hundred forty".