123616534136 has 8 divisors (see below), whose sum is σ = 231781001520. Its totient is φ = 61808267064.

The previous prime is 123616534121. The next prime is 123616534147. The reversal of 123616534136 is 631435616321.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-4 number, since 4×123616534136⁴ (a number of 45 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123616534093 and 123616534102.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7726033376 + ... + 7726033391.

It is an arithmetic number, because the mean of its divisors is an integer number (28972625190).

Almost surely, 2^123616534136 is an apocalyptic number.

It is an amenable number.

123616534136 is a deficient number, since it is larger than the sum of its proper divisors (108164467384).

123616534136 is a wasteful number, since it uses less digits than its factorization.

123616534136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15452066773 (or 15452066769 counting only the distinct ones).

The product of its digits is 233280, while the sum is 41.

The spelling of 123616534136 in words is "one hundred twenty-three billion, six hundred sixteen million, five hundred thirty-four thousand, one hundred thirty-six".