13797321443 has 16 divisors (see below), whose sum is σ = 14555102976. Its totient is φ = 13052978400.

The previous prime is 13797321437. The next prime is 13797321467. The reversal of 13797321443 is 34412379731.

It is a Cunningham number, because it is equal to 117462²-1.

It is not a de Polignac number, because 13797321443 - 2⁴ = 13797321427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13797321394 and 13797321403.

It is not an unprimeable number, because it can be changed into a prime (13797321413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2699096 + ... + 2704202.

It is an arithmetic number, because the mean of its divisors is an integer number (909693936).

Almost surely, 2^13797321443 is an apocalyptic number.

13797321443 is a deficient number, since it is larger than the sum of its proper divisors (757781533).

13797321443 is a wasteful number, since it uses less digits than its factorization.

13797321443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394.

The product of its digits is 381024, while the sum is 44.

The spelling of 13797321443 in words is "thirteen billion, seven hundred ninety-seven million, three hundred twenty-one thousand, four hundred forty-three".