5445918720 has 672 divisors, whose sum is σ = 22081662720. Its totient is φ = 1226833920.

The previous prime is 5445918697. The next prime is 5445918749. The reversal of 5445918720 is 278195445.

5445918720 is a `hidden beast` number, since 5 + 445 + 9 + 187 + 20 = 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 47 ways as a sum of consecutive naturals, for example, 68935641 + ... + 68935719.

Almost surely, 2^5445918720 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 5445918720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11040831360).

5445918720 is an abundant number, since it is smaller than the sum of its proper divisors (16635744000).

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

5445918720 is a wasteful number, since it uses less digits than its factorization.

5445918720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 5445918720 is about 73796.4682081738. The cubic root of 5445918720 is about 1759.3694711065.

The spelling of 5445918720 in words is "five billion, four hundred forty-five million, nine hundred eighteen thousand, seven hundred twenty".