2128769278680 has 64 divisors (see below), whose sum is σ = 6966881280000. Its totient is φ = 516065279360.

The previous prime is 2128769278637. The next prime is 2128769278693. The reversal of 2128769278680 is 868729678212.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 806350680 + ... + 806353319.

It is an arithmetic number, because the mean of its divisors is an integer number (108857520000).

Almost surely, 2^{2128769278680} is an apocalyptic number.

2128769278680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2128769278680 is an abundant number, since it is smaller than the sum of its proper divisors (4838112001320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2128769278680 is a wasteful number, since it uses less digits than its factorization.

2128769278680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612704024 (or 1612704020 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 66.

The spelling of 2128769278680 in words is "two trillion, one hundred twenty-eight billion, seven hundred sixty-nine million, two hundred seventy-eight thousand, six hundred eighty".