5551806720 has 288 divisors, whose sum is σ = 18357736320. Its totient is φ = 1429012480.

The previous prime is 5551806691. The next prime is 5551806751. The reversal of 5551806720 is 276081555.

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, 28181662 + ... + 28181858.

It is an arithmetic number, because the mean of its divisors is an integer number (63742140).

Almost surely, 2^5551806720 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 5551806720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9178868160).

5551806720 is an abundant number, since it is smaller than the sum of its proper divisors (12805929600).

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

5551806720 is a wasteful number, since it uses less digits than its factorization.

5551806720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 39.

The square root of 5551806720 is about 74510.4470527456. The cubic root of 5551806720 is about 1770.6991524418.

The spelling of 5551806720 in words is "five billion, five hundred fifty-one million, eight hundred six thousand, seven hundred twenty".