136136334251 has 4 divisors (see below), whose sum is σ = 136172943600. Its totient is φ = 136099724904.

The previous prime is 136136334239. The next prime is 136136334281. The reversal of 136136334251 is 152433631631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136136334251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136136334281) 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, 18299096 + ... + 18306533.

It is an arithmetic number, because the mean of its divisors is an integer number (34043235900).

Almost surely, 2^136136334251 is an apocalyptic number.

136136334251 is a deficient number, since it is larger than the sum of its proper divisors (36609349).

136136334251 is an equidigital number, since it uses as much as digits as its factorization.

136136334251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36609348.

The product of its digits is 116640, while the sum is 38.

Adding to 136136334251 its reverse (152433631631), we get a palindrome (288569965882).

The spelling of 136136334251 in words is "one hundred thirty-six billion, one hundred thirty-six million, three hundred thirty-four thousand, two hundred fifty-one".