55456843820 has 48 divisors (see below), whose sum is σ = 134340353280. Its totient is φ = 18836071104.

The previous prime is 55456843801. The next prime is 55456843831. The reversal of 55456843820 is 2834865455.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 1836050 + ... + 1866009.

It is an arithmetic number, because the mean of its divisors is an integer number (2798757360).

Almost surely, 2^55456843820 is an apocalyptic number.

It is an amenable number.

55456843820 is an abundant number, since it is smaller than the sum of its proper divisors (78883509460).

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

55456843820 is a wasteful number, since it uses less digits than its factorization.

55456843820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702182 (or 3702180 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 50.

The spelling of 55456843820 in words is "fifty-five billion, four hundred fifty-six million, eight hundred forty-three thousand, eight hundred twenty".