5243945616 has 480 divisors, whose sum is σ = 19286384640. Its totient is φ = 1334361600.

The previous prime is 5243945563. The next prime is 5243945627. The reversal of 5243945616 is 6165493425.

5243945616 is a `hidden beast` number, since 5 + 24 + 3 + 9 + 4 + 5 + 616 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15842571 + ... + 15842901.

It is an arithmetic number, because the mean of its divisors is an integer number (40179968).

Almost surely, 2^5243945616 is an apocalyptic number.

5243945616 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5243945616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9643192320).

5243945616 is an abundant number, since it is smaller than the sum of its proper divisors (14042439024).

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

5243945616 is a wasteful number, since it uses less digits than its factorization.

5243945616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 387 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 5243945616 is about 72415.0924600666. The cubic root of 5243945616 is about 1737.3449638662.

The spelling of 5243945616 in words is "five billion, two hundred forty-three million, nine hundred forty-five thousand, six hundred sixteen".