555555550056 has 64 divisors (see below), whose sum is σ = 1543975749120. Its totient is φ = 165425967360.

The previous prime is 555555550049. The next prime is 555555550103. The reversal of 555555550056 is 650055555555.

It is a junction number, because it is equal to n+sod(n) for n = 555555549990 and 555555550008.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28710115 + ... + 28729458.

It is an arithmetic number, because the mean of its divisors is an integer number (24124621080).

Almost surely, 2^555555550056 is an apocalyptic number.

It is an amenable number.

555555550056 is an abundant number, since it is smaller than the sum of its proper divisors (988420199064).

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

555555550056 is a wasteful number, since it uses less digits than its factorization.

555555550056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57439626 (or 57439622 counting only the distinct ones).

The product of its (nonzero) digits is 11718750, while the sum is 51.

The spelling of 555555550056 in words is "five hundred fifty-five billion, five hundred fifty-five million, five hundred fifty thousand, fifty-six".