261760433555 has 8 divisors (see below), whose sum is σ = 316192736544. Its totient is φ = 208021536000.

The previous prime is 261760433533. The next prime is 261760433573. The reversal of 261760433555 is 555334067162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 261760433555 - 2³⁶ = 193040956819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173350526 + ... + 173352035.

It is an arithmetic number, because the mean of its divisors is an integer number (39524092068).

Almost surely, 2^261760433555 is an apocalyptic number.

261760433555 is a deficient number, since it is larger than the sum of its proper divisors (54432302989).

261760433555 is a wasteful number, since it uses less digits than its factorization.

261760433555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346702717.

The product of its (nonzero) digits is 2268000, while the sum is 47.

The spelling of 261760433555 in words is "two hundred sixty-one billion, seven hundred sixty million, four hundred thirty-three thousand, five hundred fifty-five".