505717660356 has 48 divisors (see below), whose sum is σ = 1249768308096. Its totient is φ = 158612304384.

The previous prime is 505717660333. The next prime is 505717660361. The reversal of 505717660356 is 653066717505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 505717660299 and 505717660308.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 392190 + ... + 1079466.

It is an arithmetic number, because the mean of its divisors is an integer number (26036839752).

Almost surely, 2^505717660356 is an apocalyptic number.

It is an amenable number.

505717660356 is an abundant number, since it is smaller than the sum of its proper divisors (744050647740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505717660356 is a wasteful number, since it uses less digits than its factorization.

505717660356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690908 (or 690906 counting only the distinct ones).

The product of its (nonzero) digits is 3969000, while the sum is 51.

The spelling of 505717660356 in words is "five hundred five billion, seven hundred seventeen million, six hundred sixty thousand, three hundred fifty-six".