505356616697 has 4 divisors (see below), whose sum is σ = 505360678260. Its totient is φ = 505352555136.

The previous prime is 505356616691. The next prime is 505356616747. The reversal of 505356616697 is 796616653505.

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

It can be written as a sum of positive squares in 2 ways, for example, as 308057190841 + 197299425856 = 555029^2 + 444184^2 .

It is a cyclic number.

It is not a de Polignac number, because 505356616697 - 2⁸ = 505356616441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505356616691) 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, 1838048 + ... + 2095025.

It is an arithmetic number, because the mean of its divisors is an integer number (126340169565).

Almost surely, 2^505356616697 is an apocalyptic number.

It is an amenable number.

505356616697 is a deficient number, since it is larger than the sum of its proper divisors (4061563).

505356616697 is a wasteful number, since it uses less digits than its factorization.

505356616697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061562.

The product of its (nonzero) digits is 30618000, while the sum is 59.

The spelling of 505356616697 in words is "five hundred five billion, three hundred fifty-six million, six hundred sixteen thousand, six hundred ninety-seven".