2128256326763 has 16 divisors (see below), whose sum is σ = 2482090353600. Its totient is φ = 1824103008000.

The previous prime is 2128256326751. The next prime is 2128256326799. The reversal of 2128256326763 is 3676236528212.

It is not a de Polignac number, because 2128256326763 - 2⁸ = 2128256326507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2128256326363) 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, 5400923 + ... + 5781563.

It is an arithmetic number, because the mean of its divisors is an integer number (155130647100).

Almost surely, 2^{2128256326763} is an apocalyptic number.

2128256326763 is a deficient number, since it is larger than the sum of its proper divisors (353834026837).

2128256326763 is an equidigital number, since it uses as much as digits as its factorization.

2128256326763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396963 (or 396949 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 53.

The spelling of 2128256326763 in words is "two trillion, one hundred twenty-eight billion, two hundred fifty-six million, three hundred twenty-six thousand, seven hundred sixty-three".