261127712361 has 8 divisors (see below), whose sum is σ = 348174477504. Its totient is φ = 174083044400.

The previous prime is 261127712359. The next prime is 261127712369. The reversal of 261127712361 is 163217721162.

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

It is a cyclic number.

It is not a de Polignac number, because 261127712361 - 2¹ = 261127712359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261127712369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206190 + ... + 751511.

It is an arithmetic number, because the mean of its divisors is an integer number (43521809688).

Almost surely, 2^261127712361 is an apocalyptic number.

It is an amenable number.

261127712361 is a deficient number, since it is larger than the sum of its proper divisors (87046765143).

261127712361 is an equidigital number, since it uses as much as digits as its factorization.

261127712361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048591.

The product of its digits is 42336, while the sum is 39.

The spelling of 261127712361 in words is "two hundred sixty-one billion, one hundred twenty-seven million, seven hundred twelve thousand, three hundred sixty-one".