521117768048 has 20 divisors (see below), whose sum is σ = 1010487248040. Its totient is φ = 260346865344.

The previous prime is 521117768033. The next prime is 521117768051. The reversal of 521117768048 is 840867711125.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 521117767987 and 521117768005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13230890 + ... + 13270217.

It is an arithmetic number, because the mean of its divisors is an integer number (50524362402).

Almost surely, 2^521117768048 is an apocalyptic number.

It is an amenable number.

521117768048 is a deficient number, since it is larger than the sum of its proper divisors (489369479992).

521117768048 is a wasteful number, since it uses less digits than its factorization.

521117768048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26502344 (or 26502338 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 50.

The spelling of 521117768048 in words is "five hundred twenty-one billion, one hundred seventeen million, seven hundred sixty-eight thousand, forty-eight".