260646240644 has 24 divisors (see below), whose sum is σ = 461901245568. Its totient is φ = 128684793600.

The previous prime is 260646240619. The next prime is 260646240691. The reversal of 260646240644 is 446042646062.

It is a junction number, because it is equal to n+sod(n) for n = 260646240595 and 260646240604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1191149 + ... + 1392884.

It is an arithmetic number, because the mean of its divisors is an integer number (19245885232).

Almost surely, 2^260646240644 is an apocalyptic number.

It is an amenable number.

260646240644 is a deficient number, since it is larger than the sum of its proper divisors (201255004924).

260646240644 is a wasteful number, since it uses less digits than its factorization.

260646240644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584355 (or 2584353 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 260646240644 in words is "two hundred sixty billion, six hundred forty-six million, two hundred forty thousand, six hundred forty-four".