13128819407 has 4 divisors (see below), whose sum is σ = 14322348456. Its totient is φ = 11935290360.

The previous prime is 13128819271. The next prime is 13128819413. The reversal of 13128819407 is 70491882131.

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

It is a cyclic number.

It is not a de Polignac number, because 13128819407 - 2¹⁰ = 13128818383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13128219407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596764508 + ... + 596764529.

It is an arithmetic number, because the mean of its divisors is an integer number (3580587114).

Almost surely, 2^13128819407 is an apocalyptic number.

13128819407 is a deficient number, since it is larger than the sum of its proper divisors (1193529049).

13128819407 is a wasteful number, since it uses less digits than its factorization.

13128819407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193529048.

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 13128819407 in words is "thirteen billion, one hundred twenty-eight million, eight hundred nineteen thousand, four hundred seven".