2128880782140 has 96 divisors (see below), whose sum is σ = 6830682862080. Its totient is φ = 485296724736.

The previous prime is 2128880782129. The next prime is 2128880782141. The reversal of 2128880782140 is 412870888212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128880782141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6637930 + ... + 6951249.

It is an arithmetic number, because the mean of its divisors is an integer number (71152946480).

Almost surely, 2^{2128880782140} is an apocalyptic number.

2128880782140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2128880782140 is an abundant number, since it is smaller than the sum of its proper divisors (4701802079940).

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

2128880782140 is a wasteful number, since it uses less digits than its factorization.

2128880782140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13589571 (or 13589569 counting only the distinct ones).

The product of its (nonzero) digits is 917504, while the sum is 51.

The spelling of 2128880782140 in words is "two trillion, one hundred twenty-eight billion, eight hundred eighty million, seven hundred eighty-two thousand, one hundred forty".