260642664644 has 24 divisors (see below), whose sum is σ = 467463480960. Its totient is φ = 127121421024.

The previous prime is 260642664643. The next prime is 260642664647. The reversal of 260642664644 is 446466246062.

260642664644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 260642664592 and 260642664601.

It is not an unprimeable number, because it can be changed into a prime (260642664643) 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 7 ways as a sum of consecutive naturals, for example, 4942559 + ... + 4995014.

It is an arithmetic number, because the mean of its divisors is an integer number (19477645040).

Almost surely, 2^260642664644 is an apocalyptic number.

It is an amenable number.

260642664644 is a deficient number, since it is larger than the sum of its proper divisors (206820816316).

260642664644 is a wasteful number, since it uses less digits than its factorization.

260642664644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9937739 (or 9937737 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 50.

The spelling of 260642664644 in words is "two hundred sixty billion, six hundred forty-two million, six hundred sixty-four thousand, six hundred forty-four".