136564131123 has 12 divisors (see below), whose sum is σ = 225439200688. Its totient is φ = 78036646320.

The previous prime is 136564131103. The next prime is 136564131173. The reversal of 136564131123 is 321131465631.

136564131123 is a `hidden beast` number, since 1 + 3 + 6 + 5 + 641 + 3 + 1 + 1 + 2 + 3 = 666.

It is not a de Polignac number, because 136564131123 - 2⁶ = 136564131059 is a prime.

It is a super-2 number, since 2×136564131123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136564131103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1083842248 + ... + 1083842373.

Almost surely, 2^136564131123 is an apocalyptic number.

136564131123 is a deficient number, since it is larger than the sum of its proper divisors (88875069565).

136564131123 is a wasteful number, since it uses less digits than its factorization.

136564131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167684634 (or 2167684631 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

Adding to 136564131123 its reverse (321131465631), we get a palindrome (457695596754).

The spelling of 136564131123 in words is "one hundred thirty-six billion, five hundred sixty-four million, one hundred thirty-one thousand, one hundred twenty-three".