521334201044443 has 16 divisors (see below), whose sum is σ = 524680785812736. Its totient is φ = 517989442894560.

The previous prime is 521334201044441. The next prime is 521334201044479. The reversal of 521334201044443 is 344440102433125.

It is a cyclic number.

It is not a de Polignac number, because 521334201044443 - 2¹ = 521334201044441 is a prime.

It is a super-2 number, since 2×521334201044443² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 521334201044396 and 521334201044405.

It is not an unprimeable number, because it can be changed into a prime (521334201044441) 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 15 ways as a sum of consecutive naturals, for example, 14170137378 + ... + 14170174168.

It is an arithmetic number, because the mean of its divisors is an integer number (32792549113296).

Almost surely, 2^{521334201044443} is an apocalyptic number.

521334201044443 is a deficient number, since it is larger than the sum of its proper divisors (3346584768293).

521334201044443 is a wasteful number, since it uses less digits than its factorization.

521334201044443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59154.

The product of its (nonzero) digits is 552960, while the sum is 40.

Adding to 521334201044443 its reverse (344440102433125), we get a palindrome (865774303477568).

The spelling of 521334201044443 in words is "five hundred twenty-one trillion, three hundred thirty-four billion, two hundred one million, forty-four thousand, four hundred forty-three".