123066575523 has 12 divisors (see below), whose sum is σ = 183497116608. Its totient is φ = 79397790480.

The previous prime is 123066575501. The next prime is 123066575537. The reversal of 123066575523 is 325575660321.

123066575523 is a `hidden beast` number, since 1 + 2 + 30 + 6 + 65 + 7 + 552 + 3 = 666.

It is not a de Polignac number, because 123066575523 - 2¹⁶ = 123066509987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123066575323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220549140 + ... + 220549697.

It is an arithmetic number, because the mean of its divisors is an integer number (15291426384).

Almost surely, 2^123066575523 is an apocalyptic number.

123066575523 is a deficient number, since it is larger than the sum of its proper divisors (60430541085).

123066575523 is a wasteful number, since it uses less digits than its factorization.

123066575523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441098874 (or 441098871 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 45.

The spelling of 123066575523 in words is "one hundred twenty-three billion, sixty-six million, five hundred seventy-five thousand, five hundred twenty-three".