13720238427 has 8 divisors (see below), whose sum is σ = 20907030016. Its totient is φ = 7840136232.

The previous prime is 13720238417. The next prime is 13720238437. The reversal of 13720238427 is 72483202731.

It is an interprime number because it is at equal distance from previous prime (13720238417) and next prime (13720238437).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13720238427 - 2¹⁵ = 13720205659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13720238417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326672323 + ... + 326672364.

It is an arithmetic number, because the mean of its divisors is an integer number (2613378752).

Almost surely, 2^13720238427 is an apocalyptic number.

13720238427 is a deficient number, since it is larger than the sum of its proper divisors (7186791589).

13720238427 is an equidigital number, since it uses as much as digits as its factorization.

13720238427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653344697.

The product of its (nonzero) digits is 112896, while the sum is 39.

The spelling of 13720238427 in words is "thirteen billion, seven hundred twenty million, two hundred thirty-eight thousand, four hundred twenty-seven".