521356432348 has 24 divisors (see below), whose sum is σ = 950724255600. Its totient is φ = 249852156288.

The previous prime is 521356432297. The next prime is 521356432349. The reversal of 521356432348 is 843234653125.

It is a junction number, because it is equal to n+sod(n) for n = 521356432298 and 521356432307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521356432349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16387218 + ... + 16419001.

It is an arithmetic number, because the mean of its divisors is an integer number (39613510650).

Almost surely, 2^521356432348 is an apocalyptic number.

521356432348 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

521356432348 is a deficient number, since it is larger than the sum of its proper divisors (429367823252).

521356432348 is a wasteful number, since it uses less digits than its factorization.

521356432348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32806389 (or 32806387 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 46.

The spelling of 521356432348 in words is "five hundred twenty-one billion, three hundred fifty-six million, four hundred thirty-two thousand, three hundred forty-eight".