136634773181 has 2 divisors, whose sum is σ = 136634773182. Its totient is φ = 136634773180.

The previous prime is 136634773147. The next prime is 136634773201. The reversal of 136634773181 is 181377436631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124968613081 + 11666160100 = 353509^2 + 108010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136634773181 is a prime.

It is a super-2 number, since 2×136634773181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136634776181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68317386590 + 68317386591.

It is an arithmetic number, because the mean of its divisors is an integer number (68317386591).

Almost surely, 2^136634773181 is an apocalyptic number.

It is an amenable number.

136634773181 is a deficient number, since it is larger than the sum of its proper divisors (1).

136634773181 is an equidigital number, since it uses as much as digits as its factorization.

136634773181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 50.

The spelling of 136634773181 in words is "one hundred thirty-six billion, six hundred thirty-four million, seven hundred seventy-three thousand, one hundred eighty-one".