136691616884 has 6 divisors (see below), whose sum is σ = 239210329554. Its totient is φ = 68345808440.

The previous prime is 136691616881. The next prime is 136691616947. The reversal of 136691616884 is 488616196631.

It can be written as a sum of positive squares in only one way, i.e., 120506179600 + 16185437284 = 347140^2 + 127222^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136691616881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17086452107 + ... + 17086452114.

It is an arithmetic number, because the mean of its divisors is an integer number (39868388259).

Almost surely, 2^136691616884 is an apocalyptic number.

It is an amenable number.

136691616884 is a deficient number, since it is larger than the sum of its proper divisors (102518712670).

136691616884 is a wasteful number, since it uses less digits than its factorization.

136691616884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34172904225 (or 34172904223 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 59.

The spelling of 136691616884 in words is "one hundred thirty-six billion, six hundred ninety-one million, six hundred sixteen thousand, eight hundred eighty-four".