2560777659049 has 3 divisors (see below), whose sum is σ = 2560779259293. Its totient is φ = 2560776058806.

The previous prime is 2560777659019. The next prime is 2560777659067. The reversal of 2560777659049 is 9409567770652.

The square root of 2560777659049 is 1600243.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2560777659049 - 2⁵ = 2560777659017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2560777659019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 800122 + ... + 2400364.

It is an arithmetic number, because the mean of its divisors is an integer number (853593086431).

Almost surely, 2^{2560777659049} is an apocalyptic number.

2560777659049 is the 1600243-rd square number.

2560777659049 is the 800122-nd centered octagonal number.

It is an amenable number.

2560777659049 is a deficient number, since it is larger than the sum of its proper divisors (1600244).

2560777659049 is an frugal number, since it uses more digits than its factorization.

2560777659049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200486 (or 1600243 counting only the distinct ones).

The product of its (nonzero) digits is 200037600, while the sum is 67.

The spelling of 2560777659049 in words is "two trillion, five hundred sixty billion, seven hundred seventy-seven million, six hundred fifty-nine thousand, forty-nine".