14438128771 has 4 divisors (see below), whose sum is σ = 15750685944. Its totient is φ = 13125571600.

The previous prime is 14438128769. The next prime is 14438128777. The reversal of 14438128771 is 17782183441.

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 14438128771 - 2¹ = 14438128769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14438128777) 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, 656278570 + ... + 656278591.

It is an arithmetic number, because the mean of its divisors is an integer number (3937671486).

Almost surely, 2^14438128771 is an apocalyptic number.

14438128771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

14438128771 is a deficient number, since it is larger than the sum of its proper divisors (1312557173).

14438128771 is a wasteful number, since it uses less digits than its factorization.

14438128771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312557172.

The product of its digits is 301056, while the sum is 46.

The spelling of 14438128771 in words is "fourteen billion, four hundred thirty-eight million, one hundred twenty-eight thousand, seven hundred seventy-one".