261255750774 has 8 divisors (see below), whose sum is σ = 522511501560. Its totient is φ = 87085250256.

The previous prime is 261255750733. The next prime is 261255750809. The reversal of 261255750774 is 477057552162.

261255750774 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.

261255750774 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 21771312559 + ... + 21771312570.

It is an arithmetic number, because the mean of its divisors is an integer number (65313937695).

Almost surely, 2^261255750774 is an apocalyptic number.

261255750774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

261255750774 is a wasteful number, since it uses less digits than its factorization.

261255750774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43542625134.

The product of its (nonzero) digits is 4116000, while the sum is 51.

The spelling of 261255750774 in words is "two hundred sixty-one billion, two hundred fifty-five million, seven hundred fifty thousand, seven hundred seventy-four".