261674543560255 has 32 divisors (see below), whose sum is σ = 359293568071680. Its totient is φ = 179221170585600.

The previous prime is 261674543560229. The next prime is 261674543560337. The reversal of 261674543560255 is 552065345476162.

It is not a de Polignac number, because 261674543560255 - 2⁹ = 261674543559743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261674543560193 and 261674543560202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2308965402 + ... + 2309078728.

It is an arithmetic number, because the mean of its divisors is an integer number (11227924002240).

Almost surely, 2^{261674543560255} is an apocalyptic number.

261674543560255 is a deficient number, since it is larger than the sum of its proper divisors (97619024511425).

261674543560255 is a wasteful number, since it uses less digits than its factorization.

261674543560255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190999.

The product of its (nonzero) digits is 181440000, while the sum is 61.

The spelling of 261674543560255 in words is "two hundred sixty-one trillion, six hundred seventy-four billion, five hundred forty-three million, five hundred sixty thousand, two hundred fifty-five".