521604425144773 has 8 divisors (see below), whose sum is σ = 521632855554336. Its totient is φ = 521575995531600.

The previous prime is 521604425144767. The next prime is 521604425144857. The reversal of 521604425144773 is 377441524406125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 521604425144773 - 2¹³ = 521604425136581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521604425141773) by changing a digit.

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, 1668545343 + ... + 1668857923.

It is an arithmetic number, because the mean of its divisors is an integer number (65204106944292).

Almost surely, 2^{521604425144773} is an apocalyptic number.

It is an amenable number.

521604425144773 is a deficient number, since it is larger than the sum of its proper divisors (28430409563).

521604425144773 is a wasteful number, since it uses less digits than its factorization.

521604425144773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398195.

The product of its (nonzero) digits is 22579200, while the sum is 55.

The spelling of 521604425144773 in words is "five hundred twenty-one trillion, six hundred four billion, four hundred twenty-five million, one hundred forty-four thousand, seven hundred seventy-three".