2111929577688 has 64 divisors (see below), whose sum is σ = 6071103509760. Its totient is φ = 599706550656.

The previous prime is 2111929577687. The next prime is 2111929577699. The reversal of 2111929577688 is 8867759291112.

It is a super-2 number, since 2×2111929577688² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111929577683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38533995 + ... + 38588762.

It is an arithmetic number, because the mean of its divisors is an integer number (94860992340).

Almost surely, 2^{2111929577688} is an apocalyptic number.

2111929577688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2111929577688 is an abundant number, since it is smaller than the sum of its proper divisors (3959173932072).

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

2111929577688 is a wasteful number, since it uses less digits than its factorization.

2111929577688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77122936 (or 77122932 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 66.

The spelling of 2111929577688 in words is "two trillion, one hundred eleven billion, nine hundred twenty-nine million, five hundred seventy-seven thousand, six hundred eighty-eight".