2539696608 has 72 divisors (see below), whose sum is σ = 7240602096. Its totient is φ = 844416000.

The previous prime is 2539696603. The next prime is 2539696609. The reversal of 2539696608 is 8066969352.

2539696608 is a `hidden beast` number, since 25 + 3 + 9 + 6 + 9 + 6 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539696603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104493 + ... + 126483.

It is an arithmetic number, because the mean of its divisors is an integer number (100563918).

Almost surely, 2^2539696608 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 2539696608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3620301048).

2539696608 is an abundant number, since it is smaller than the sum of its proper divisors (4700905488).

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

2539696608 is a wasteful number, since it uses less digits than its factorization.

2539696608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22408 (or 22397 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The square root of 2539696608 is about 50395.4026474638. The cubic root of 2539696608 is about 1364.3546633512.

The spelling of 2539696608 in words is "two billion, five hundred thirty-nine million, six hundred ninety-six thousand, six hundred eight".