2566239372 has 72 divisors (see below), whose sum is σ = 6644195376. Its totient is φ = 834914304.

The previous prime is 2566239281. The next prime is 2566239373. The reversal of 2566239372 is 2739326652.

2566239372 is a `hidden beast` number, since 256 + 6 + 2 + 393 + 7 + 2 = 666.

2566239372 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 hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2566239373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249883 + ... + 259949.

Almost surely, 2^2566239372 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 2566239372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3322097688).

2566239372 is an abundant number, since it is smaller than the sum of its proper divisors (4077956004).

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

2566239372 is a wasteful number, since it uses less digits than its factorization.

2566239372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10247 (or 10242 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 2566239372 is about 50658.0632476213. The cubic root of 2566239372 is about 1369.0912281671.

The spelling of 2566239372 in words is "two billion, five hundred sixty-six million, two hundred thirty-nine thousand, three hundred seventy-two".