55500698880 has 576 divisors, whose sum is σ = 218161843200. Its totient is φ = 13247815680.

The previous prime is 55500698857. The next prime is 55500698927. The reversal of 55500698880 is 8889600555.

55500698880 is a `hidden beast` number, since 5 + 550 + 0 + 6 + 9 + 8 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25469631 + ... + 25471809.

It is an arithmetic number, because the mean of its divisors is an integer number (378753200).

Almost surely, 2^55500698880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55500698880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109080921600).

55500698880 is an abundant number, since it is smaller than the sum of its proper divisors (162661144320).

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

55500698880 is a wasteful number, since it uses less digits than its factorization.

55500698880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287 (or 2267 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 54.

The spelling of 55500698880 in words is "fifty-five billion, five hundred million, six hundred ninety-eight thousand, eight hundred eighty".