5215324323421 has 4 divisors (see below), whose sum is σ = 5228941358592. Its totient is φ = 5201707288252.

The previous prime is 5215324323401. The next prime is 5215324323437. The reversal of 5215324323421 is 1243234235125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5215324323421 - 2⁹ = 5215324322909 is a prime.

It is a super-4 number, since 4×5215324323421⁴ (a number of 52 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 (5215324323401) 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, 6808517011 + ... + 6808517776.

It is an arithmetic number, because the mean of its divisors is an integer number (1307235339648).

Almost surely, 2^{5215324323421} is an apocalyptic number.

It is an amenable number.

5215324323421 is a deficient number, since it is larger than the sum of its proper divisors (13617035171).

5215324323421 is a wasteful number, since it uses less digits than its factorization.

5215324323421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13617035170.

The product of its digits is 172800, while the sum is 37.

Adding to 5215324323421 its reverse (1243234235125), we get a palindrome (6458558558546).

The spelling of 5215324323421 in words is "five trillion, two hundred fifteen billion, three hundred twenty-four million, three hundred twenty-three thousand, four hundred twenty-one".