136836974649 has 8 divisors (see below), whose sum is σ = 183232344672. Its totient is φ = 90833127200.

The previous prime is 136836974623. The next prime is 136836974689. The reversal of 136836974649 is 946479638631.

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

It is a cyclic number.

It is not a de Polignac number, because 136836974649 - 2²⁸ = 136568539193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136836974649.

It is not an unprimeable number, because it can be changed into a prime (136836974689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97879827 + ... + 97881224.

It is an arithmetic number, because the mean of its divisors is an integer number (22904043084).

Almost surely, 2^136836974649 is an apocalyptic number.

It is an amenable number.

136836974649 is a deficient number, since it is larger than the sum of its proper divisors (46395370023).

136836974649 is a wasteful number, since it uses less digits than its factorization.

136836974649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195761287.

The product of its digits is 141087744, while the sum is 66.

The spelling of 136836974649 in words is "one hundred thirty-six billion, eight hundred thirty-six million, nine hundred seventy-four thousand, six hundred forty-nine".