2561745712 has 10 divisors (see below), whose sum is σ = 4963382348. Its totient is φ = 1280872848.

The previous prime is 2561745709. The next prime is 2561745713. The reversal of 2561745712 is 2175471652.

It is not an unprimeable number, because it can be changed into a prime (2561745713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80054538 + ... + 80054569.

Almost surely, 2^2561745712 is an apocalyptic number.

It is an amenable number.

2561745712 is a deficient number, since it is larger than the sum of its proper divisors (2401636636).

2561745712 is a wasteful number, since it uses less digits than its factorization.

2561745712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160109115 (or 160109109 counting only the distinct ones).

The product of its digits is 117600, while the sum is 40.

The square root of 2561745712 is about 50613.6909541282. The cubic root of 2561745712 is about 1368.2916372631.

The spelling of 2561745712 in words is "two billion, five hundred sixty-one million, seven hundred forty-five thousand, seven hundred twelve".