136828208243 has 4 divisors (see below), whose sum is σ = 136847096160. Its totient is φ = 136809320328.

The previous prime is 136828208203. The next prime is 136828208249. The reversal of 136828208243 is 342802828631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342802828631 = 271217 ⋅1263943.

It is a cyclic number.

It is not a de Polignac number, because 136828208243 - 2²⁶ = 136761099379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136828208249) 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, 9433088 + ... + 9447581.

It is an arithmetic number, because the mean of its divisors is an integer number (34211774040).

Almost surely, 2^136828208243 is an apocalyptic number.

136828208243 is a deficient number, since it is larger than the sum of its proper divisors (18887917).

136828208243 is an equidigital number, since it uses as much as digits as its factorization.

136828208243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18887916.

The product of its (nonzero) digits is 884736, while the sum is 47.

The spelling of 136828208243 in words is "one hundred thirty-six billion, eight hundred twenty-eight million, two hundred eight thousand, two hundred forty-three".