55544732420 has 12 divisors (see below), whose sum is σ = 116643938124. Its totient is φ = 22217892960.

The previous prime is 55544732393. The next prime is 55544732431. The reversal of 55544732420 is 2423744555.

It can be written as a sum of positive squares in 2 ways, for example, as 8133153856 + 47411578564 = 90184^2 + 217742^2 .

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 3 ways as a sum of consecutive naturals, for example, 1388618291 + ... + 1388618330.

It is an arithmetic number, because the mean of its divisors is an integer number (9720328177).

Almost surely, 2^55544732420 is an apocalyptic number.

It is an amenable number.

55544732420 is an abundant number, since it is smaller than the sum of its proper divisors (61099205704).

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

55544732420 is a wasteful number, since it uses less digits than its factorization.

55544732420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777236630 (or 2777236628 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 41.

The spelling of 55544732420 in words is "fifty-five billion, five hundred forty-four million, seven hundred thirty-two thousand, four hundred twenty".