261096565803 has 8 divisors (see below), whose sum is σ = 350052118416. Its totient is φ = 173102695200.

The previous prime is 261096565799. The next prime is 261096565811. The reversal of 261096565803 is 308565690162.

261096565803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 261096565803 - 2² = 261096565799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261096565703) 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, 240419868 + ... + 240420953.

It is an arithmetic number, because the mean of its divisors is an integer number (43756514802).

Almost surely, 2^261096565803 is an apocalyptic number.

261096565803 is a deficient number, since it is larger than the sum of its proper divisors (88955552613).

261096565803 is a wasteful number, since it uses less digits than its factorization.

261096565803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480841005.

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 261096565803 in words is "two hundred sixty-one billion, ninety-six million, five hundred sixty-five thousand, eight hundred three".