55663838860 has 48 divisors (see below), whose sum is σ = 134890269696. Its totient is φ = 18899451072.

The previous prime is 55663838833. The next prime is 55663838891. The reversal of 55663838860 is 6883836655.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55663838795 and 55663838804.

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 15 ways as a sum of consecutive naturals, for example, 1915672 + ... + 1944511.

It is an arithmetic number, because the mean of its divisors is an integer number (2810213952).

Almost surely, 2^55663838860 is an apocalyptic number.

It is an amenable number.

55663838860 is an abundant number, since it is smaller than the sum of its proper divisors (79226430836).

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

55663838860 is a wasteful number, since it uses less digits than its factorization.

55663838860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3860302 (or 3860300 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 58.

The spelling of 55663838860 in words is "fifty-five billion, six hundred sixty-three million, eight hundred thirty-eight thousand, eight hundred sixty".