2560038561 has 16 divisors (see below), whose sum is σ = 3793566400. Its totient is φ = 1706279904.

The previous prime is 2560038557. The next prime is 2560038563. The reversal of 2560038561 is 1658300652.

2560038561 is a `hidden beast` number, since 2 + 5 + 60 + 0 + 38 + 561 = 666.

It is not a de Polignac number, because 2560038561 - 2² = 2560038557 is a prime.

It is a super-3 number, since 3×2560038561³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2560038563) 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, 137565 + ... + 155061.

It is an arithmetic number, because the mean of its divisors is an integer number (237097900).

Almost surely, 2^2560038561 is an apocalyptic number.

It is an amenable number.

2560038561 is a deficient number, since it is larger than the sum of its proper divisors (1233527839).

2560038561 is a wasteful number, since it uses less digits than its factorization.

2560038561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22925 (or 22919 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 2560038561 is about 50596.8236255993. The cubic root of 2560038561 is about 1367.9876258884.

The spelling of 2560038561 in words is "two billion, five hundred sixty million, thirty-eight thousand, five hundred sixty-one".