521354321422 has 16 divisors (see below), whose sum is σ = 853238120112. Its totient is φ = 236947885120.

The previous prime is 521354321377. The next prime is 521354321473. The reversal of 521354321422 is 224123453125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1397113 + ... + 1730500.

It is an arithmetic number, because the mean of its divisors is an integer number (53327382507).

Almost surely, 2^521354321422 is an apocalyptic number.

521354321422 is a deficient number, since it is larger than the sum of its proper divisors (331883798690).

521354321422 is a wasteful number, since it uses less digits than its factorization.

521354321422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135203.

The product of its digits is 57600, while the sum is 34.

Adding to 521354321422 its reverse (224123453125), we get a palindrome (745477774547).

The spelling of 521354321422 in words is "five hundred twenty-one billion, three hundred fifty-four million, three hundred twenty-one thousand, four hundred twenty-two".