55218422020446 has 32 divisors (see below), whose sum is σ = 122708166520320. Its totient is φ = 18406056368952.

The previous prime is 55218422020441. The next prime is 55218422020519. The reversal of 55218422020446 is 64402022481255.

55218422020446 is a `hidden beast` number, since 5 + 5 + 2 + 18 + 422 + 0 + 204 + 4 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55218422020441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10170481 + ... + 14624483.

It is an arithmetic number, because the mean of its divisors is an integer number (3834630203760).

Almost surely, 2^{55218422020446} is an apocalyptic number.

55218422020446 is an abundant number, since it is smaller than the sum of its proper divisors (67489744499874).

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

55218422020446 is a wasteful number, since it uses less digits than its factorization.

55218422020446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4683597 (or 4683591 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 45.

The spelling of 55218422020446 in words is "fifty-five trillion, two hundred eighteen billion, four hundred twenty-two million, twenty thousand, four hundred forty-six".