55000055000556 has 72 divisors (see below), whose sum is σ = 142786863339120. Its totient is φ = 17837676372096.

The previous prime is 55000055000543. The next prime is 55000055000557. The reversal of 55000055000556 is 65500055000055.

55000055000556 is a `hidden beast` number, since 5 + 50 + 0 + 0 + 0 + 5 + 50 + 0 + 0 + 556 = 666.

It is a super-4 number, since 4×55000055000556⁴ (a number of 56 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 55000055000556.

It is not an unprimeable number, because it can be changed into a prime (55000055000557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220159990 + ... + 220409666.

It is an arithmetic number, because the mean of its divisors is an integer number (1983150879710).

Almost surely, 2^{55000055000556} is an apocalyptic number.

It is an amenable number.

55000055000556 is an abundant number, since it is smaller than the sum of its proper divisors (87786808338564).

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

55000055000556 is a wasteful number, since it uses less digits than its factorization.

55000055000556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415103 (or 415098 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The spelling of 55000055000556 in words is "fifty-five trillion, fifty-five million, five hundred fifty-six", and thus it is an aban number.