55911854880 has 384 divisors, whose sum is σ = 236805327360. Its totient is φ = 12027985920.

The previous prime is 55911854879. The next prime is 55911854903. The reversal of 55911854880 is 8845811955.

55911854880 is a `hidden beast` number, since 5 + 5 + 9 + 1 + 18 + 548 + 80 = 666.

It is a super-2 number, since 2×55911854880² (a number of 22 digits) contains 22 as substring.

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

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, 459700 + ... + 568460.

It is an arithmetic number, because the mean of its divisors is an integer number (616680540).

Almost surely, 2^55911854880 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 55911854880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118402663680).

55911854880 is an abundant number, since it is smaller than the sum of its proper divisors (180893472480).

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

55911854880 is a wasteful number, since it uses less digits than its factorization.

55911854880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108809 (or 108795 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 54.

The spelling of 55911854880 in words is "fifty-five billion, nine hundred eleven million, eight hundred fifty-four thousand, eight hundred eighty".