123224553565505 has 16 divisors (see below), whose sum is σ = 169000728652800. Its totient is φ = 84493309134912.

The previous prime is 123224553565501. The next prime is 123224553565517. The reversal of 123224553565505 is 505565355422321.

It is a cyclic number.

It is not a de Polignac number, because 123224553565505 - 2² = 123224553565501 is a prime.

It is a super-2 number, since 2×123224553565505² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123224553565501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72641105 + ... + 74318094.

It is an arithmetic number, because the mean of its divisors is an integer number (10562545540800).

Almost surely, 2^{123224553565505} is an apocalyptic number.

It is an amenable number.

123224553565505 is a deficient number, since it is larger than the sum of its proper divisors (45776175087295).

123224553565505 is a wasteful number, since it uses less digits than its factorization.

123224553565505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146983168.

The product of its (nonzero) digits is 27000000, while the sum is 53.

The spelling of 123224553565505 in words is "one hundred twenty-three trillion, two hundred twenty-four billion, five hundred fifty-three million, five hundred sixty-five thousand, five hundred five".