136389618523 has 2 divisors, whose sum is σ = 136389618524. Its totient is φ = 136389618522.

The previous prime is 136389618517. The next prime is 136389618527. The reversal of 136389618523 is 325816983631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136389618523 - 2⁹ = 136389618011 is a prime.

It is not a weakly prime, because it can be changed into another prime (136389618527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68194809261 + 68194809262.

It is an arithmetic number, because the mean of its divisors is an integer number (68194809262).

Almost surely, 2^136389618523 is an apocalyptic number.

136389618523 is a deficient number, since it is larger than the sum of its proper divisors (1).

136389618523 is an equidigital number, since it uses as much as digits as its factorization.

136389618523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 55.

The spelling of 136389618523 in words is "one hundred thirty-six billion, three hundred eighty-nine million, six hundred eighteen thousand, five hundred twenty-three".