136109853623 has 4 divisors (see below), whose sum is σ = 136125850608. Its totient is φ = 136093856640.

The previous prime is 136109853571. The next prime is 136109853667. The reversal of 136109853623 is 326358901631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326358901631 = 7 ⋅46622700233.

It is a cyclic number.

It is not a de Polignac number, because 136109853623 - 2¹⁴ = 136109837239 is a prime.

It is a super-2 number, since 2×136109853623² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136109853673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7985723 + ... + 8002748.

It is an arithmetic number, because the mean of its divisors is an integer number (34031462652).

Almost surely, 2^136109853623 is an apocalyptic number.

136109853623 is a deficient number, since it is larger than the sum of its proper divisors (15996985).

136109853623 is an equidigital number, since it uses as much as digits as its factorization.

136109853623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15996984.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 136109853623 in words is "one hundred thirty-six billion, one hundred nine million, eight hundred fifty-three thousand, six hundred twenty-three".