136538426817 has 64 divisors (see below), whose sum is σ = 223608591360. Its totient is φ = 81816521472.

The previous prime is 136538426807. The next prime is 136538426819. The reversal of 136538426817 is 718624835631.

136538426817 is a `hidden beast` number, since 1 + 3 + 6 + 538 + 4 + 26 + 81 + 7 = 666.

It is not a de Polignac number, because 136538426817 - 2¹¹ = 136538424769 is a prime.

It is a super-2 number, since 2×136538426817² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136538426819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3228903 + ... + 3270915.

It is an arithmetic number, because the mean of its divisors is an integer number (3493884240).

Almost surely, 2^136538426817 is an apocalyptic number.

It is an amenable number.

136538426817 is a deficient number, since it is larger than the sum of its proper divisors (87070164543).

136538426817 is a wasteful number, since it uses less digits than its factorization.

136538426817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42279 (or 42273 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 136538426817 in words is "one hundred thirty-six billion, five hundred thirty-eight million, four hundred twenty-six thousand, eight hundred seventeen".