136664026434365 has 4 divisors (see below), whose sum is σ = 163996831721244. Its totient is φ = 109331221147488.

The previous prime is 136664026434329. The next prime is 136664026434367. The reversal of 136664026434365 is 563434620466631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73680025861849 + 62984000572516 = 8583707^2 + 7936246^2 .

It is a cyclic number.

It is not a de Polignac number, because 136664026434365 - 2²² = 136664022240061 is a prime.

It is a super-2 number, since 2×136664026434365² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136664026434367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13666402643432 + ... + 13666402643441.

It is an arithmetic number, because the mean of its divisors is an integer number (40999207930311).

Almost surely, 2^{136664026434365} is an apocalyptic number.

It is an amenable number.

136664026434365 is a deficient number, since it is larger than the sum of its proper divisors (27332805286879).

136664026434365 is an equidigital number, since it uses as much as digits as its factorization.

136664026434365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27332805286878.

The product of its (nonzero) digits is 134369280, while the sum is 59.

The spelling of 136664026434365 in words is "one hundred thirty-six trillion, six hundred sixty-four billion, twenty-six million, four hundred thirty-four thousand, three hundred sixty-five".