2561260716 has 48 divisors (see below), whose sum is σ = 7588922880. Its totient is φ = 731788560.

The previous prime is 2561260711. The next prime is 2561260721. The reversal of 2561260716 is 6170621652.

It is a happy number.

2561260716 is a `hidden beast` number, since 2 + 561 + 26 + 0 + 71 + 6 = 666.

2561260716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2561260711) and next prime (2561260721).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2561260711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1693200 + ... + 1694711.

It is an arithmetic number, because the mean of its divisors is an integer number (158102560).

Almost surely, 2^2561260716 is an apocalyptic number.

It is an amenable number.

2561260716 is an abundant number, since it is smaller than the sum of its proper divisors (5027662164).

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

2561260716 is a wasteful number, since it uses less digits than its factorization.

2561260716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387931 (or 3387923 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 2561260716 is about 50608.8995730988. The cubic root of 2561260716 is about 1368.2052823670.

The spelling of 2561260716 in words is "two billion, five hundred sixty-one million, two hundred sixty thousand, seven hundred sixteen".