71732676661 has 16 divisors (see below), whose sum is σ = 74539745280. Its totient is φ = 68980232880.

The previous prime is 71732676649. The next prime is 71732676679. The reversal of 71732676661 is 16667623717.

It is a cyclic number.

It is not a de Polignac number, because 71732676661 - 2¹⁵ = 71732643893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71732676599 and 71732676608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71732676611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6336196 + ... + 6347506.

It is an arithmetic number, because the mean of its divisors is an integer number (4658734080).

Almost surely, 2^71732676661 is an apocalyptic number.

It is an amenable number.

71732676661 is a deficient number, since it is larger than the sum of its proper divisors (2807068619).

71732676661 is a wasteful number, since it uses less digits than its factorization.

71732676661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13704.

The product of its digits is 2667168, while the sum is 52.

The spelling of 71732676661 in words is "seventy-one billion, seven hundred thirty-two million, six hundred seventy-six thousand, six hundred sixty-one".