136680406287347 has 4 divisors (see below), whose sum is σ = 147194283694080. Its totient is φ = 126166528880616.

The previous prime is 136680406287329. The next prime is 136680406287413. The reversal of 136680406287347 is 743782604086631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136680406287347 - 2²⁰ = 136680405238771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136680406287247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5256938703347 + ... + 5256938703372.

It is an arithmetic number, because the mean of its divisors is an integer number (36798570923520).

Almost surely, 2^{136680406287347} is an apocalyptic number.

136680406287347 is a deficient number, since it is larger than the sum of its proper divisors (10513877406733).

136680406287347 is a wasteful number, since it uses less digits than its factorization.

136680406287347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10513877406732.

The product of its (nonzero) digits is 195084288, while the sum is 65.

The spelling of 136680406287347 in words is "one hundred thirty-six trillion, six hundred eighty billion, four hundred six million, two hundred eighty-seven thousand, three hundred forty-seven".