136618108663 has 2 divisors, whose sum is σ = 136618108664. Its totient is φ = 136618108662.

The previous prime is 136618108651. The next prime is 136618108703. The reversal of 136618108663 is 366801816631.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136618108663 is a prime.

It is a super-2 number, since 2×136618108663² (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 (136618108633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68309054331 + 68309054332.

It is an arithmetic number, because the mean of its divisors is an integer number (68309054332).

Almost surely, 2^136618108663 is an apocalyptic number.

136618108663 is a deficient number, since it is larger than the sum of its proper divisors (1).

136618108663 is an equidigital number, since it uses as much as digits as its factorization.

136618108663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 136618108663 in words is "one hundred thirty-six billion, six hundred eighteen million, one hundred eight thousand, six hundred sixty-three".