13348733421 has 36 divisors (see below), whose sum is σ = 19237091552. Its totient is φ = 8231853696.

The previous prime is 13348733417. The next prime is 13348733443. The reversal of 13348733421 is 12433784331.

It is not a de Polignac number, because 13348733421 - 2² = 13348733417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13348733421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13348733221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3015816 + ... + 3020238.

Almost surely, 2^13348733421 is an apocalyptic number.

It is an amenable number.

13348733421 is a deficient number, since it is larger than the sum of its proper divisors (5888358131).

13348733421 is an equidigital number, since it uses as much as digits as its factorization.

13348733421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4578 (or 4502 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The spelling of 13348733421 in words is "thirteen billion, three hundred forty-eight million, seven hundred thirty-three thousand, four hundred twenty-one".