136591516417 has 2 divisors, whose sum is σ = 136591516418. Its totient is φ = 136591516416.

The previous prime is 136591516387. The next prime is 136591516421. The reversal of 136591516417 is 714615195631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77070643456 + 59520872961 = 277616^2 + 243969^2 .

It is a cyclic number.

It is not a de Polignac number, because 136591516417 - 2¹⁵ = 136591483649 is a prime.

It is not a weakly prime, because it can be changed into another prime (136591516447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68295758208 + 68295758209.

It is an arithmetic number, because the mean of its divisors is an integer number (68295758209).

Almost surely, 2^136591516417 is an apocalyptic number.

It is an amenable number.

136591516417 is a deficient number, since it is larger than the sum of its proper divisors (1).

136591516417 is an equidigital number, since it uses as much as digits as its factorization.

136591516417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 49.

The spelling of 136591516417 in words is "one hundred thirty-six billion, five hundred ninety-one million, five hundred sixteen thousand, four hundred seventeen".