2539043568 has 240 divisors, whose sum is σ = 8031628800. Its totient is φ = 744007680.

The previous prime is 2539043557. The next prime is 2539043593. The reversal of 2539043568 is 8653409352.

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, 3674103 + ... + 3674793.

It is an arithmetic number, because the mean of its divisors is an integer number (33465120).

Almost surely, 2^2539043568 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 2539043568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4015814400).

2539043568 is an abundant number, since it is smaller than the sum of its proper divisors (5492585232).

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

2539043568 is a wasteful number, since it uses less digits than its factorization.

2539043568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 811 counting only the distinct ones).

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

The square root of 2539043568 is about 50388.9230684681. The cubic root of 2539043568 is about 1364.2377130897.

The spelling of 2539043568 in words is "two billion, five hundred thirty-nine million, forty-three thousand, five hundred sixty-eight".