136681346678 has 8 divisors (see below), whose sum is σ = 205125207672. Its totient is φ = 68306277456.

The previous prime is 136681346663. The next prime is 136681346701. The reversal of 136681346678 is 876643186631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17192975 + ... + 17200922.

It is an arithmetic number, because the mean of its divisors is an integer number (25640650959).

Almost surely, 2^136681346678 is an apocalyptic number.

136681346678 is a deficient number, since it is larger than the sum of its proper divisors (68443860994).

136681346678 is a wasteful number, since it uses less digits than its factorization.

136681346678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34395886.

The product of its digits is 20901888, while the sum is 59.

The spelling of 136681346678 in words is "one hundred thirty-six billion, six hundred eighty-one million, three hundred forty-six thousand, six hundred seventy-eight".