505766725445123 has 4 divisors (see below), whose sum is σ = 532386026784360. Its totient is φ = 479147424105888.

The previous prime is 505766725445039. The next prime is 505766725445153. The reversal of 505766725445123 is 321544527667505.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505766725445123 - 2¹² = 505766725441027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505766725445153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13309650669590 + ... + 13309650669627.

It is an arithmetic number, because the mean of its divisors is an integer number (133096506696090).

Almost surely, 2^{505766725445123} is an apocalyptic number.

505766725445123 is a deficient number, since it is larger than the sum of its proper divisors (26619301339237).

505766725445123 is a wasteful number, since it uses less digits than its factorization.

505766725445123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26619301339236.

The product of its (nonzero) digits is 211680000, while the sum is 62.

The spelling of 505766725445123 in words is "five hundred five trillion, seven hundred sixty-six billion, seven hundred twenty-five million, four hundred forty-five thousand, one hundred twenty-three".