55655622220 has 36 divisors (see below), whose sum is σ = 128467900512. Its totient is φ = 20238407200.

The previous prime is 55655622199. The next prime is 55655622247. The reversal of 55655622220 is 2222655655.

It is a happy 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 11 ways as a sum of consecutive naturals, for example, 11496676 + ... + 11501515.

It is an arithmetic number, because the mean of its divisors is an integer number (3568552792).

Almost surely, 2^55655622220 is an apocalyptic number.

It is an amenable number.

55655622220 is an abundant number, since it is smaller than the sum of its proper divisors (72812278292).

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

55655622220 is a wasteful number, since it uses less digits than its factorization.

55655622220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22998222 (or 22998209 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 55655622220 in words is "fifty-five billion, six hundred fifty-five million, six hundred twenty-two thousand, two hundred twenty".