521228347960319 has 4 divisors (see below), whose sum is σ = 526288817358096. Its totient is φ = 516167878562544.

The previous prime is 521228347960283. The next prime is 521228347960357. The reversal of 521228347960319 is 913069743822125.

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

It is a cyclic number.

It is not a de Polignac number, because 521228347960319 - 2⁸ = 521228347960063 is a prime.

It is a super-4 number, since 4×521228347960319⁴ (a number of 60 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521228347965319) 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, 2530234698734 + ... + 2530234698939.

It is an arithmetic number, because the mean of its divisors is an integer number (131572204339524).

It is a 1-persistent number, because it is pandigital, but 2⋅521228347960319 = 1042456695920638 is not.

Almost surely, 2^{521228347960319} is an apocalyptic number.

521228347960319 is a deficient number, since it is larger than the sum of its proper divisors (5060469397777).

521228347960319 is a wasteful number, since it uses less digits than its factorization.

521228347960319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060469397776.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 521228347960319 in words is "five hundred twenty-one trillion, two hundred twenty-eight billion, three hundred forty-seven million, nine hundred sixty thousand, three hundred nineteen".