128465713547 has 4 divisors (see below), whose sum is σ = 128648974896. Its totient is φ = 128282452200.

The previous prime is 128465713531. The next prime is 128465713603. The reversal of 128465713547 is 745317564821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745317564821 = 31 ⋅24042502091.

It is a cyclic number.

It is not a de Polignac number, because 128465713547 - 2⁴ = 128465713531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128465313547) 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, 91629623 + ... + 91631024.

It is an arithmetic number, because the mean of its divisors is an integer number (32162243724).

Almost surely, 2^128465713547 is an apocalyptic number.

128465713547 is a deficient number, since it is larger than the sum of its proper divisors (183261349).

128465713547 is an equidigital number, since it uses as much as digits as its factorization.

128465713547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183261348.

The product of its digits is 5644800, while the sum is 53.

The spelling of 128465713547 in words is "one hundred twenty-eight billion, four hundred sixty-five million, seven hundred thirteen thousand, five hundred forty-seven".