521734455672316 has 24 divisors (see below), whose sum is σ = 914023096642656. Its totient is φ = 260585110947840.

The previous prime is 521734455672293. The next prime is 521734455672329. The reversal of 521734455672316 is 613276554437125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4797336 + ... + 32657056.

It is an arithmetic number, because the mean of its divisors is an integer number (38084295693444).

Almost surely, 2^{521734455672316} is an apocalyptic number.

It is an amenable number.

521734455672316 is a deficient number, since it is larger than the sum of its proper divisors (392288640970340).

521734455672316 is a wasteful number, since it uses less digits than its factorization.

521734455672316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27864789 (or 27864787 counting only the distinct ones).

The product of its digits is 127008000, while the sum is 61.

The spelling of 521734455672316 in words is "five hundred twenty-one trillion, seven hundred thirty-four billion, four hundred fifty-five million, six hundred seventy-two thousand, three hundred sixteen".