5449945680 has 560 divisors, whose sum is σ = 21077936640. Its totient is φ = 1302884352.

The previous prime is 5449945667. The next prime is 5449945717. The reversal of 5449945680 is 865499445.

5449945680 is a `hidden beast` number, since 54 + 499 + 45 + 68 + 0 = 666.

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

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, 22803001 + ... + 22803239.

Almost surely, 2^5449945680 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 5449945680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10538968320).

5449945680 is an abundant number, since it is smaller than the sum of its proper divisors (15627990960).

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

5449945680 is a wasteful number, since it uses less digits than its factorization.

5449945680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The square root of 5449945680 is about 73823.7473987876. The cubic root of 5449945680 is about 1759.8030168659.

The spelling of 5449945680 in words is "five billion, four hundred forty-nine million, nine hundred forty-five thousand, six hundred eighty".