261101867441315 has 16 divisors (see below), whose sum is σ = 317903856833088. Its totient is φ = 205832300115456.

The previous prime is 261101867441297. The next prime is 261101867441347. The reversal of 261101867441315 is 513144768101162.

It is a cyclic number.

It is not a de Polignac number, because 261101867441315 - 2⁶ = 261101867441251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325646807 + ... + 326447616.

It is an arithmetic number, because the mean of its divisors is an integer number (19868991052068).

Almost surely, 2^{261101867441315} is an apocalyptic number.

261101867441315 is a deficient number, since it is larger than the sum of its proper divisors (56801989391773).

261101867441315 is a wasteful number, since it uses less digits than its factorization.

261101867441315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652095598.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 261101867441315 in words is "two hundred sixty-one trillion, one hundred one billion, eight hundred sixty-seven million, four hundred forty-one thousand, three hundred fifteen".