2168577871128 has 48 divisors (see below), whose sum is σ = 6218715957480. Its totient is φ = 680338155264.

The previous prime is 2168577871093. The next prime is 2168577871133. The reversal of 2168577871128 is 8211787758612.

2168577871128 is a `hidden beast` number, since 21 + 6 + 8 + 577 + 8 + 7 + 11 + 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 (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 885855750 + ... + 885858197.

Almost surely, 2^{2168577871128} is an apocalyptic number.

It is an amenable number.

2168577871128 is an abundant number, since it is smaller than the sum of its proper divisors (4050138086352).

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

2168577871128 is a wasteful number, since it uses less digits than its factorization.

2168577871128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771713976 (or 1771713969 counting only the distinct ones).

The product of its digits is 21073920, while the sum is 63.

It can be divided in two parts, 21685778 and 71128, that added together give a triangular number (21756906 = T₆₅₉₆).

The spelling of 2168577871128 in words is "two trillion, one hundred sixty-eight billion, five hundred seventy-seven million, eight hundred seventy-one thousand, one hundred twenty-eight".