136324356115621 has 2 divisors, whose sum is σ = 136324356115622. Its totient is φ = 136324356115620.

The previous prime is 136324356115609. The next prime is 136324356115681. The reversal of 136324356115621 is 126511653423631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88611835984996 + 47712520130625 = 9413386^2 + 6907425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136324356115621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136324356115681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68162178057810 + 68162178057811.

It is an arithmetic number, because the mean of its divisors is an integer number (68162178057811).

Almost surely, 2^{136324356115621} is an apocalyptic number.

It is an amenable number.

136324356115621 is a deficient number, since it is larger than the sum of its proper divisors (1).

136324356115621 is an equidigital number, since it uses as much as digits as its factorization.

136324356115621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 49.

The spelling of 136324356115621 in words is "one hundred thirty-six trillion, three hundred twenty-four billion, three hundred fifty-six million, one hundred fifteen thousand, six hundred twenty-one".