521384834716 has 48 divisors (see below), whose sum is σ = 975376039680. Its totient is φ = 243323136000.

The previous prime is 521384834701. The next prime is 521384834749. The reversal of 521384834716 is 617438483125.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3306796 + ... + 3460876.

It is an arithmetic number, because the mean of its divisors is an integer number (20320334160).

Almost surely, 2^521384834716 is an apocalyptic number.

It is an amenable number.

521384834716 is a deficient number, since it is larger than the sum of its proper divisors (453991204964).

521384834716 is a wasteful number, since it uses less digits than its factorization.

521384834716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155086 (or 155084 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 52.

The spelling of 521384834716 in words is "five hundred twenty-one billion, three hundred eighty-four million, eight hundred thirty-four thousand, seven hundred sixteen".