128465814311 has 4 divisors (see below), whose sum is σ = 131453391432. Its totient is φ = 125478237192.

The previous prime is 128465814307. The next prime is 128465814313. The reversal of 128465814311 is 113418564821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113418564821 = 84437 ⋅1343233.

It is a cyclic number.

It is not a de Polignac number, because 128465814311 - 2² = 128465814307 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 (128465814313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1493788496 + ... + 1493788581.

It is an arithmetic number, because the mean of its divisors is an integer number (32863347858).

Almost surely, 2^128465814311 is an apocalyptic number.

128465814311 is a deficient number, since it is larger than the sum of its proper divisors (2987577121).

128465814311 is an equidigital number, since it uses as much as digits as its factorization.

128465814311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2987577120.

The product of its digits is 184320, while the sum is 44.

The spelling of 128465814311 in words is "one hundred twenty-eight billion, four hundred sixty-five million, eight hundred fourteen thousand, three hundred eleven".