136547028181 has 2 divisors, whose sum is σ = 136547028182. Its totient is φ = 136547028180.

The previous prime is 136547028157. The next prime is 136547028197. The reversal of 136547028181 is 181820745631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85655728900 + 50891299281 = 292670^2 + 225591^2 .

It is a cyclic number.

It is not a de Polignac number, because 136547028181 - 2¹⁹ = 136546503893 is a prime.

It is a super-2 number, since 2×136547028181² (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 (136547028151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68273514090 + 68273514091.

It is an arithmetic number, because the mean of its divisors is an integer number (68273514091).

Almost surely, 2^136547028181 is an apocalyptic number.

It is an amenable number.

136547028181 is a deficient number, since it is larger than the sum of its proper divisors (1).

136547028181 is an equidigital number, since it uses as much as digits as its factorization.

136547028181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 136547028181 in words is "one hundred thirty-six billion, five hundred forty-seven million, twenty-eight thousand, one hundred eighty-one".