55555550056056 has 32 divisors (see below), whose sum is σ = 138909491378640. Its totient is φ = 18515767853568.

The previous prime is 55555550055989. The next prime is 55555550056133. The reversal of 55555550056056 is 65065005555555.

It is a junction number, because it is equal to n+sod(n) for n = 55555550055987 and 55555550056005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171636931 + ... + 171960306.

Almost surely, 2^{55555550056056} is an apocalyptic number.

It is an amenable number.

55555550056056 is an abundant number, since it is smaller than the sum of its proper divisors (83353941322584).

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

55555550056056 is a wasteful number, since it uses less digits than its factorization.

55555550056056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343603983 (or 343603979 counting only the distinct ones).

The product of its (nonzero) digits is 70312500, while the sum is 57.

The spelling of 55555550056056 in words is "fifty-five trillion, five hundred fifty-five billion, five hundred fifty million, fifty-six thousand, fifty-six".