136918211329 has 4 divisors (see below), whose sum is σ = 140257679940. Its totient is φ = 133578742720.

The previous prime is 136918211219. The next prime is 136918211347. The reversal of 136918211329 is 923112819631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 83197633600 + 53720577729 = 288440^2 + 231777^2 .

It is a cyclic number.

It is not a de Polignac number, because 136918211329 - 2⁷ = 136918211201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136918211029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1669734244 + ... + 1669734325.

It is an arithmetic number, because the mean of its divisors is an integer number (35064419985).

Almost surely, 2^136918211329 is an apocalyptic number.

It is an amenable number.

136918211329 is a deficient number, since it is larger than the sum of its proper divisors (3339468611).

136918211329 is an equidigital number, since it uses as much as digits as its factorization.

136918211329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3339468610.

The product of its digits is 139968, while the sum is 46.

The spelling of 136918211329 in words is "one hundred thirty-six billion, nine hundred eighteen million, two hundred eleven thousand, three hundred twenty-nine".