123564161133 has 12 divisors (see below), whose sum is σ = 203978932768. Its totient is φ = 70608092040.

The previous prime is 123564161117. The next prime is 123564161141. The reversal of 123564161133 is 331161465321.

123564161133 is a `hidden beast` number, since 1 + 2 + 3 + 5 + 6 + 4 + 1 + 611 + 33 = 666.

It is not a de Polignac number, because 123564161133 - 2⁴ = 123564161117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123564161183) 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, 980667883 + ... + 980668008.

Almost surely, 2^123564161133 is an apocalyptic number.

It is an amenable number.

123564161133 is a deficient number, since it is larger than the sum of its proper divisors (80414771635).

123564161133 is a wasteful number, since it uses less digits than its factorization.

123564161133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961335904 (or 1961335901 counting only the distinct ones).

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

The spelling of 123564161133 in words is "one hundred twenty-three billion, five hundred sixty-four million, one hundred sixty-one thousand, one hundred thirty-three".