261052334855 has 16 divisors (see below), whose sum is σ = 343077910560. Its totient is φ = 189509697408.

The previous prime is 261052334843. The next prime is 261052334861. The reversal of 261052334855 is 558433250162.

It is a cyclic number.

It is not a de Polignac number, because 261052334855 - 2⁶ = 261052334791 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34031672 + ... + 34039341.

It is an arithmetic number, because the mean of its divisors is an integer number (21442369410).

Almost surely, 2^261052334855 is an apocalyptic number.

261052334855 is a deficient number, since it is larger than the sum of its proper divisors (82025575705).

261052334855 is a wasteful number, since it uses less digits than its factorization.

261052334855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68071090.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 261052334855 in words is "two hundred sixty-one billion, fifty-two million, three hundred thirty-four thousand, eight hundred fifty-five".