2563540216 has 16 divisors (see below), whose sum is σ = 4807934640. Its totient is φ = 1281424320.

The previous prime is 2563540207. The next prime is 2563540219. The reversal of 2563540216 is 6120453652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563540219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10236 + ... + 72331.

It is an arithmetic number, because the mean of its divisors is an integer number (300495915).

Almost surely, 2^2563540216 is an apocalyptic number.

It is an amenable number.

2563540216 is a deficient number, since it is larger than the sum of its proper divisors (2244394424).

2563540216 is a wasteful number, since it uses less digits than its factorization.

2563540216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86454 (or 86450 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 2563540216 is about 50631.4153070996. The cubic root of 2563540216 is about 1368.6110589880.

Adding to 2563540216 its reverse (6120453652), we get a palindrome (8683993868).

The spelling of 2563540216 in words is "two billion, five hundred sixty-three million, five hundred forty thousand, two hundred sixteen".