13821380573 has 24 divisors (see below), whose sum is σ = 18659359296. Its totient is φ = 9941443200.

The previous prime is 13821380561. The next prime is 13821380609. The reversal of 13821380573 is 37508312831.

It is not a de Polignac number, because 13821380573 - 2¹² = 13821376477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13821380573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13821380543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 518048 + ... + 544073.

It is an arithmetic number, because the mean of its divisors is an integer number (777473304).

Almost surely, 2^13821380573 is an apocalyptic number.

13821380573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13821380573 is a deficient number, since it is larger than the sum of its proper divisors (4837978723).

13821380573 is a wasteful number, since it uses less digits than its factorization.

13821380573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062165 (or 1062152 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 13821380573 in words is "thirteen billion, eight hundred twenty-one million, three hundred eighty thousand, five hundred seventy-three".