55533880080 has 240 divisors, whose sum is σ = 218343775104. Its totient is φ = 12383815680.

The previous prime is 55533880057. The next prime is 55533880091. The reversal of 55533880080 is 8008833555.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72267 + ... + 341013.

Almost surely, 2^55533880080 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 55533880080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109171887552).

55533880080 is an abundant number, since it is smaller than the sum of its proper divisors (162809895024).

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

55533880080 is a wasteful number, since it uses less digits than its factorization.

55533880080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268814 (or 268805 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 55533880080 in words is "fifty-five billion, five hundred thirty-three million, eight hundred eighty thousand, eighty".