2543398704 has 450 divisors, whose sum is σ = 9440861892. Its totient is φ = 658627200.

The previous prime is 2543398703. The next prime is 2543398709. The reversal of 2543398704 is 4078933452.

2543398704 is a `hidden beast` number, since 2 + 543 + 39 + 8 + 70 + 4 = 666.

2543398704 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2543398704.

It is not an unprimeable number, because it can be changed into a prime (2543398703) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 7683819 + ... + 7684149.

Almost surely, 2^2543398704 is an apocalyptic number.

2543398704 is a gapful number since it is divisible by the number (24) 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 2543398704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4720430946).

2543398704 is an abundant number, since it is smaller than the sum of its proper divisors (6897463188).

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

2543398704 is a wasteful number, since it uses less digits than its factorization.

2543398704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 2543398704 is about 50432.1197650862. The cubic root of 2543398704 is about 1365.0172778878.

The spelling of 2543398704 in words is "two billion, five hundred forty-three million, three hundred ninety-eight thousand, seven hundred four".