2560681971 has 8 divisors (see below), whose sum is σ = 3793602960. Its totient is φ = 1707121296.

The previous prime is 2560681969. The next prime is 2560681993. The reversal of 2560681971 is 1791860652.

2560681971 is a `hidden beast` number, since 2 + 560 + 6 + 8 + 19 + 71 = 666.

It is not a de Polignac number, because 2560681971 - 2¹ = 2560681969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2560681901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47420010 + ... + 47420063.

It is an arithmetic number, because the mean of its divisors is an integer number (474200370).

Almost surely, 2^2560681971 is an apocalyptic number.

2560681971 is a deficient number, since it is larger than the sum of its proper divisors (1232920989).

2560681971 is an equidigital number, since it uses as much as digits as its factorization.

2560681971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94840082 (or 94840076 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 2560681971 is about 50603.1814316057. The cubic root of 2560681971 is about 1368.1022209319.

It can be divided in two parts, 2560681 and 971, that added together give a palindrome (2561652).

The spelling of 2560681971 in words is "two billion, five hundred sixty million, six hundred eighty-one thousand, nine hundred seventy-one".