2109612931128 has 96 divisors (see below), whose sum is σ = 5940783139200. Its totient is φ = 701348645088.

The previous prime is 2109612931061. The next prime is 2109612931141. The reversal of 2109612931128 is 8211392169012.

2109612931128 is a `hidden beast` number, since 2 + 1 + 0 + 9 + 612 + 9 + 3 + 1 + 1 + 28 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 694876 + ... + 2168427.

It is an arithmetic number, because the mean of its divisors is an integer number (61883157700).

Almost surely, 2^{2109612931128} is an apocalyptic number.

It is an amenable number.

2109612931128 is an abundant number, since it is smaller than the sum of its proper divisors (3831170208072).

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

2109612931128 is a wasteful number, since it uses less digits than its factorization.

2109612931128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863703 (or 2863687 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 2109612931128 in words is "two trillion, one hundred nine billion, six hundred twelve million, nine hundred thirty-one thousand, one hundred twenty-eight".