136503131850161 has 2 divisors, whose sum is σ = 136503131850162. Its totient is φ = 136503131850160.

The previous prime is 136503131850157. The next prime is 136503131850199. The reversal of 136503131850161 is 161058131305631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136298176451761 + 204955398400 = 11674681^2 + 452720^2 .

It is a cyclic number.

It is not a de Polignac number, because 136503131850161 - 2² = 136503131850157 is a prime.

It is not a weakly prime, because it can be changed into another prime (136503131855161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68251565925080 + 68251565925081.

It is an arithmetic number, because the mean of its divisors is an integer number (68251565925081).

Almost surely, 2^{136503131850161} is an apocalyptic number.

It is an amenable number.

136503131850161 is a deficient number, since it is larger than the sum of its proper divisors (1).

136503131850161 is an equidigital number, since it uses as much as digits as its factorization.

136503131850161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 136503131850161 in words is "one hundred thirty-six trillion, five hundred three billion, one hundred thirty-one million, eight hundred fifty thousand, one hundred sixty-one".