13128418251 has 16 divisors (see below), whose sum is σ = 20945625120. Its totient is φ = 8079026400.

The previous prime is 13128418241. The next prime is 13128418271. The reversal of 13128418251 is 15281482131.

It is a happy number.

13128418251 is a `hidden beast` number, since 1 + 312 + 84 + 18 + 251 = 666.

13128418251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13128418251 - 2³¹ = 10980934603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13128418241) 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 15 ways as a sum of consecutive naturals, for example, 18701100 + ... + 18701801.

It is an arithmetic number, because the mean of its divisors is an integer number (1309101570).

Almost surely, 2^13128418251 is an apocalyptic number.

13128418251 is a deficient number, since it is larger than the sum of its proper divisors (7817206869).

13128418251 is a wasteful number, since it uses less digits than its factorization.

13128418251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37402923 (or 37402917 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The spelling of 13128418251 in words is "thirteen billion, one hundred twenty-eight million, four hundred eighteen thousand, two hundred fifty-one".