261083408944 has 20 divisors (see below), whose sum is σ = 507864447720. Its totient is φ = 130021616000.

The previous prime is 261083408879. The next prime is 261083409001. The reversal of 261083408944 is 449804380162.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 32501389 + ... + 32509420.

It is an arithmetic number, because the mean of its divisors is an integer number (25393222386).

Almost surely, 2^261083408944 is an apocalyptic number.

It is an amenable number.

261083408944 is a deficient number, since it is larger than the sum of its proper divisors (246781038776).

261083408944 is a wasteful number, since it uses less digits than its factorization.

261083408944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65011068 (or 65011062 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 49.

The spelling of 261083408944 in words is "two hundred sixty-one billion, eighty-three million, four hundred eight thousand, nine hundred forty-four".