2128769278679 has 8 divisors (see below), whose sum is σ = 2199988631232. Its totient is φ = 2058468885760.

The previous prime is 2128769278637. The next prime is 2128769278693. The reversal of 2128769278679 is 9768729678212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2128769278679 - 2¹⁶ = 2128769213143 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 (2128769278619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229735199 + ... + 229744464.

It is an arithmetic number, because the mean of its divisors is an integer number (274998578904).

Almost surely, 2^{2128769278679} is an apocalyptic number.

2128769278679 is a deficient number, since it is larger than the sum of its proper divisors (71219352553).

2128769278679 is a wasteful number, since it uses less digits than its factorization.

2128769278679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459479817.

The product of its digits is 512096256, while the sum is 74.

The spelling of 2128769278679 in words is "two trillion, one hundred twenty-eight billion, seven hundred sixty-nine million, two hundred seventy-eight thousand, six hundred seventy-nine".