5563961280 has 784 divisors, whose sum is σ = 22307482944. Its totient is φ = 1313832960.

The previous prime is 5563961279. The next prime is 5563961287. The reversal of 5563961280 is 821693655.

5563961280 is a `hidden beast` number, since 5 + 5 + 639 + 6 + 1 + 2 + 8 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5563961287) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 91212450 + ... + 91212510.

Almost surely, 2^5563961280 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 5563961280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11153741472).

5563961280 is an abundant number, since it is smaller than the sum of its proper divisors (16743521664).

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

5563961280 is a wasteful number, since it uses less digits than its factorization.

5563961280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 5563961280 is about 74591.9652509572. The cubic root of 5563961280 is about 1771.9904066932.

The spelling of 5563961280 in words is "five billion, five hundred sixty-three million, nine hundred sixty-one thousand, two hundred eighty".