5445863280 has 560 divisors, whose sum is σ = 22336757856. Its totient is φ = 1216788480.

The previous prime is 5445863273. The next prime is 5445863303. The reversal of 5445863280 is 823685445.

5445863280 is a `hidden beast` number, since 5 + 4 + 4 + 5 + 8 + 632 + 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 an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 8339434 + ... + 8340086.

Almost surely, 2^5445863280 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 5445863280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11168378928).

5445863280 is an abundant number, since it is smaller than the sum of its proper divisors (16890894576).

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

5445863280 is a wasteful number, since it uses less digits than its factorization.

5445863280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The square root of 5445863280 is about 73796.0925794855. The cubic root of 5445863280 is about 1759.3635009002.

The spelling of 5445863280 in words is "five billion, four hundred forty-five million, eight hundred sixty-three thousand, two hundred eighty".