136841546221 has 2 divisors, whose sum is σ = 136841546222. Its totient is φ = 136841546220.

The previous prime is 136841546159. The next prime is 136841546243. The reversal of 136841546221 is 122645148631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90412070596 + 46429475625 = 300686^2 + 215475^2 .

It is a cyclic number.

It is not a de Polignac number, because 136841546221 - 2¹⁵ = 136841513453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136841346221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68420773110 + 68420773111.

It is an arithmetic number, because the mean of its divisors is an integer number (68420773111).

Almost surely, 2^136841546221 is an apocalyptic number.

It is an amenable number.

136841546221 is a deficient number, since it is larger than the sum of its proper divisors (1).

136841546221 is an equidigital number, since it uses as much as digits as its factorization.

136841546221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 43.

The spelling of 136841546221 in words is "one hundred thirty-six billion, eight hundred forty-one million, five hundred forty-six thousand, two hundred twenty-one".