55550505555500 has 96 divisors (see below), whose sum is σ = 124532104185216. Its totient is φ = 21639540000000.

The previous prime is 55550505555469. The next prime is 55550505555557. The reversal of 55550505555500 is 555550505555.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5935976 + ... + 12096975.

It is an arithmetic number, because the mean of its divisors is an integer number (1297209418596).

Almost surely, 2^{55550505555500} is an apocalyptic number.

55550505555500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55550505555500 is an abundant number, since it is smaller than the sum of its proper divisors (68981598629716).

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

55550505555500 is a wasteful number, since it uses less digits than its factorization.

55550505555500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18033132 (or 18033120 counting only the distinct ones).

The product of its (nonzero) digits is 9765625, while the sum is 50.

The spelling of 55550505555500 in words is "fifty-five trillion, five hundred fifty billion, five hundred five million, five hundred fifty-five thousand, five hundred".