136213273247 has 4 divisors (see below), whose sum is σ = 136221636480. Its totient is φ = 136204910016.

The previous prime is 136213273171. The next prime is 136213273277. The reversal of 136213273247 is 742372312631.

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 136213273247 - 2²⁶ = 136146164383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136213273277) 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, 4157138 + ... + 4189775.

It is an arithmetic number, because the mean of its divisors is an integer number (34055409120).

Almost surely, 2^136213273247 is an apocalyptic number.

136213273247 is a deficient number, since it is larger than the sum of its proper divisors (8363233).

136213273247 is an equidigital number, since it uses as much as digits as its factorization.

136213273247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8363232.

The product of its digits is 254016, while the sum is 41.

Adding to 136213273247 its reverse (742372312631), we get a palindrome (878585585878).

The spelling of 136213273247 in words is "one hundred thirty-six billion, two hundred thirteen million, two hundred seventy-three thousand, two hundred forty-seven".