13997843498 has 4 divisors (see below), whose sum is σ = 20996765250. Its totient is φ = 6998921748.

The previous prime is 13997843491. The next prime is 13997843507. The reversal of 13997843498 is 89434879931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89434879931 = 127 ⋅704211653.

It can be written as a sum of positive squares in only one way, i.e., 13889329609 + 108513889 = 117853^2 + 10417^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13997843491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3499460873 + ... + 3499460876.

Almost surely, 2^13997843498 is an apocalyptic number.

13997843498 is a deficient number, since it is larger than the sum of its proper divisors (6998921752).

13997843498 is an equidigital number, since it uses as much as digits as its factorization.

13997843498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6998921751.

The product of its digits is 47029248, while the sum is 65.

The spelling of 13997843498 in words is "thirteen billion, nine hundred ninety-seven million, eight hundred forty-three thousand, four hundred ninety-eight".