13971921298 has 4 divisors (see below), whose sum is σ = 20957881950. Its totient is φ = 6985960648.

The previous prime is 13971921289. The next prime is 13971921331. The reversal of 13971921298 is 89212917931.

It is a happy number.

13971921298 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10337398929 + 3634522369 = 101673^2 + 60287^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3492980323 + ... + 3492980326.

Almost surely, 2^13971921298 is an apocalyptic number.

13971921298 is a deficient number, since it is larger than the sum of its proper divisors (6985960652).

13971921298 is an equidigital number, since it uses as much as digits as its factorization.

13971921298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6985960651.

The product of its digits is 489888, while the sum is 52.

The spelling of 13971921298 in words is "thirteen billion, nine hundred seventy-one million, nine hundred twenty-one thousand, two hundred ninety-eight".