2560242981 has 16 divisors (see below), whose sum is σ = 3459948800. Its totient is φ = 1683721728.

The previous prime is 2560242977. The next prime is 2560243003. The reversal of 2560242981 is 1892420652.

It is not a de Polignac number, because 2560242981 - 2² = 2560242977 is a prime.

It is a super-2 number, since 2×2560242981² = 13109688243519532722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2560240981) 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, 303225 + ... + 311553.

It is an arithmetic number, because the mean of its divisors is an integer number (216246800).

Almost surely, 2^2560242981 is an apocalyptic number.

It is an amenable number.

2560242981 is a deficient number, since it is larger than the sum of its proper divisors (899705819).

2560242981 is a wasteful number, since it uses less digits than its factorization.

2560242981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9708.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 2560242981 is about 50598.8436725584. The cubic root of 2560242981 is about 1368.0240363539.

The spelling of 2560242981 in words is "two billion, five hundred sixty million, two hundred forty-two thousand, nine hundred eighty-one".