261052334856 has 48 divisors (see below), whose sum is σ = 720356689260. Its totient is φ = 85375605120.

The previous prime is 261052334843. The next prime is 261052334861. The reversal of 261052334856 is 658433250162.

261052334856 is a `hidden beast` number, since 2 + 6 + 10 + 523 + 34 + 85 + 6 = 666.

261052334856 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 238622480100 + 22429854756 = 488490^2 + 149766^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 34201155 + ... + 34208786.

Almost surely, 2^261052334856 is an apocalyptic number.

It is an amenable number.

261052334856 is an abundant number, since it is smaller than the sum of its proper divisors (459304354404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261052334856 is a wasteful number, since it uses less digits than its factorization.

261052334856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68410006 (or 68409999 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 261052334856 in words is "two hundred sixty-one billion, fifty-two million, three hundred thirty-four thousand, eight hundred fifty-six".