261676125734171 has 8 divisors (see below), whose sum is σ = 262083040596288. Its totient is φ = 261269366400000.

The previous prime is 261676125734167. The next prime is 261676125734173. The reversal of 261676125734171 is 171437521676162.

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 261676125734171 - 2² = 261676125734167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 261676125734171.

It is not an unprimeable number, because it can be changed into a prime (261676125734173) 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, 35514140 + ... + 42244601.

It is an arithmetic number, because the mean of its divisors is an integer number (32760380074536).

Almost surely, 2^{261676125734171} is an apocalyptic number.

261676125734171 is a deficient number, since it is larger than the sum of its proper divisors (406914862117).

261676125734171 is an equidigital number, since it uses as much as digits as its factorization.

261676125734171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77763973.

The product of its digits is 17781120, while the sum is 59.

The spelling of 261676125734171 in words is "two hundred sixty-one trillion, six hundred seventy-six billion, one hundred twenty-five million, seven hundred thirty-four thousand, one hundred seventy-one".