55550803280 has 80 divisors (see below), whose sum is σ = 149685490944. Its totient is φ = 18777722880.

The previous prime is 55550803279. The next prime is 55550803339. The reversal of 55550803280 is 8230805555.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 658817 + ... + 738336.

Almost surely, 2^55550803280 is an apocalyptic number.

It is an amenable number.

55550803280 is an abundant number, since it is smaller than the sum of its proper divisors (94134687664).

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

55550803280 is a wasteful number, since it uses less digits than its factorization.

55550803280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397244 (or 1397238 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 41.

The spelling of 55550803280 in words is "fifty-five billion, five hundred fifty million, eight hundred three thousand, two hundred eighty".