2560742999 has 4 divisors (see below), whose sum is σ = 2564726136. Its totient is φ = 2556759864.

The previous prime is 2560742981. The next prime is 2560743001. The reversal of 2560742999 is 9992470652.

2560742999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2560742999 - 2¹² = 2560738903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2560742999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2560742959) 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, 1990604 + ... + 1991889.

It is an arithmetic number, because the mean of its divisors is an integer number (641181534).

Almost surely, 2^2560742999 is an apocalyptic number.

2560742999 is a deficient number, since it is larger than the sum of its proper divisors (3983137).

2560742999 is an equidigital number, since it uses as much as digits as its factorization.

2560742999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983136.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The square root of 2560742999 is about 50603.7844335777. The cubic root of 2560742999 is about 1368.1130893750.

The spelling of 2560742999 in words is "two billion, five hundred sixty million, seven hundred forty-two thousand, nine hundred ninety-nine".