260115829721 has 12 divisors (see below), whose sum is σ = 286048033236. Its totient is φ = 236356792320.

The previous prime is 260115829693. The next prime is 260115829733. The reversal of 260115829721 is 127928511062.

It can be written as a sum of positive squares in 2 ways, for example, as 102217681225 + 157898148496 = 319715^2 + 397364^2 .

It is not a de Polignac number, because 260115829721 - 2²⁶ = 260048720857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (260115829321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253016 + ... + 764361.

It is an arithmetic number, because the mean of its divisors is an integer number (23837336103).

Almost surely, 2^260115829721 is an apocalyptic number.

It is an amenable number.

260115829721 is a deficient number, since it is larger than the sum of its proper divisors (25932203515).

260115829721 is a wasteful number, since it uses less digits than its factorization.

260115829721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019512 (or 1019501 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 260115829721 in words is "two hundred sixty billion, one hundred fifteen million, eight hundred twenty-nine thousand, seven hundred twenty-one".