2128262575668 has 48 divisors (see below), whose sum is σ = 5228080872000. Its totient is φ = 671984011008.

The previous prime is 2128262575619. The next prime is 2128262575697. The reversal of 2128262575668 is 8665752628212.

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 15 ways as a sum of consecutive naturals, for example, 873568 + ... + 2240456.

It is an arithmetic number, because the mean of its divisors is an integer number (108918351500).

Almost surely, 2^{2128262575668} is an apocalyptic number.

It is an amenable number.

2128262575668 is an abundant number, since it is smaller than the sum of its proper divisors (3099818296332).

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

2128262575668 is a wasteful number, since it uses less digits than its factorization.

2128262575668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373744 (or 1373742 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 60.

The spelling of 2128262575668 in words is "two trillion, one hundred twenty-eight billion, two hundred sixty-two million, five hundred seventy-five thousand, six hundred sixty-eight".