55440816020 has 24 divisors (see below), whose sum is σ = 120181383168. Its totient is φ = 21460960800.

The previous prime is 55440816017. The next prime is 55440816073. The reversal of 55440816020 is 2061804455.

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, 44709716 + ... + 44710955.

It is an arithmetic number, because the mean of its divisors is an integer number (5007557632).

Almost surely, 2^55440816020 is an apocalyptic number.

It is an amenable number.

55440816020 is an abundant number, since it is smaller than the sum of its proper divisors (64740567148).

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

55440816020 is a wasteful number, since it uses less digits than its factorization.

55440816020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89420711 (or 89420709 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 55440816020 in words is "fifty-five billion, four hundred forty million, eight hundred sixteen thousand, twenty".