13381420251 has 4 divisors (see below), whose sum is σ = 17841893672. Its totient is φ = 8920946832.

The previous prime is 13381420249. The next prime is 13381420253. The reversal of 13381420251 is 15202418331.

13381420251 is digitally balanced in base 2, 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 is an interprime number because it is at equal distance from previous prime (13381420249) and next prime (13381420253).

It is not a de Polignac number, because 13381420251 - 2¹ = 13381420249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13381420253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2230236706 + ... + 2230236711.

It is an arithmetic number, because the mean of its divisors is an integer number (4460473418).

Almost surely, 2^13381420251 is an apocalyptic number.

13381420251 is a deficient number, since it is larger than the sum of its proper divisors (4460473421).

13381420251 is an equidigital number, since it uses as much as digits as its factorization.

13381420251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4460473420.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 13381420251 its reverse (15202418331), we get a palindrome (28583838582).

The spelling of 13381420251 in words is "thirteen billion, three hundred eighty-one million, four hundred twenty thousand, two hundred fifty-one".