41217688261 has 4 divisors (see below), whose sum is σ = 41595832300. Its totient is φ = 40839544224.

The previous prime is 41217688219. The next prime is 41217688289. The reversal of 41217688261 is 16288671214.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16288671214 = 2 ⋅8144335607.

It can be written as a sum of positive squares in 2 ways, for example, as 22441837636 + 18775850625 = 149806^2 + 137025^2 .

It is a cyclic number.

It is not a de Polignac number, because 41217688261 - 2²⁹ = 40680817349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41217688961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189071856 + ... + 189072073.

It is an arithmetic number, because the mean of its divisors is an integer number (10398958075).

Almost surely, 2^41217688261 is an apocalyptic number.

It is an amenable number.

41217688261 is a deficient number, since it is larger than the sum of its proper divisors (378144039).

41217688261 is a wasteful number, since it uses less digits than its factorization.

41217688261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378144038.

The product of its digits is 258048, while the sum is 46.

The spelling of 41217688261 in words is "forty-one billion, two hundred seventeen million, six hundred eighty-eight thousand, two hundred sixty-one".