12161737682 has 16 divisors (see below), whose sum is σ = 18490300920. Its totient is φ = 5998620672.

The previous prime is 12161737663. The next prime is 12161737727. The reversal of 12161737682 is 28673716121.

It can be written as a sum of positive squares in 4 ways, for example, as 6140132881 + 6021604801 = 78359^2 + 77599^2 .

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, 1823 + ... + 155970.

Almost surely, 2^12161737682 is an apocalyptic number.

12161737682 is a deficient number, since it is larger than the sum of its proper divisors (6328563238).

12161737682 is a wasteful number, since it uses less digits than its factorization.

12161737682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158317.

The product of its digits is 169344, while the sum is 44.

The spelling of 12161737682 in words is "twelve billion, one hundred sixty-one million, seven hundred thirty-seven thousand, six hundred eighty-two".