2028771763173 has 6 divisors (see below), whose sum is σ = 2930448102374. Its totient is φ = 1352514508776.

The previous prime is 2028771763157. The next prime is 2028771763181. The reversal of 2028771763173 is 3713671778202.

2028771763173 is a `hidden beast` number, since 20 + 287 + 7 + 176 + 3 + 173 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1905509681604 + 123262081569 = 1380402^2 + 351087^2 .

It is not a de Polignac number, because 2028771763173 - 2⁴ = 2028771763157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028771563173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112709542390 + ... + 112709542407.

Almost surely, 2^{2028771763173} is an apocalyptic number.

It is an amenable number.

2028771763173 is a deficient number, since it is larger than the sum of its proper divisors (901676339201).

2028771763173 is a wasteful number, since it uses less digits than its factorization.

2028771763173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225419084803 (or 225419084800 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 54.

The spelling of 2028771763173 in words is "two trillion, twenty-eight billion, seven hundred seventy-one million, seven hundred sixty-three thousand, one hundred seventy-three".