2000723266181 has 4 divisors (see below), whose sum is σ = 2118412870092. Its totient is φ = 1883033662272.

The previous prime is 2000723266159. The next prime is 2000723266237. The reversal of 2000723266181 is 1816623270002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 814876317025 + 1185846949156 = 902705^2 + 1088966^2 .

It is not a de Polignac number, because 2000723266181 - 2³⁴ = 1983543396997 is a prime.

It is a super-2 number, since 2×2000723266181² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000723266121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 58844801930 + ... + 58844801963.

It is an arithmetic number, because the mean of its divisors is an integer number (529603217523).

Almost surely, 2^{2000723266181} is an apocalyptic number.

It is an amenable number.

2000723266181 is a deficient number, since it is larger than the sum of its proper divisors (117689603911).

2000723266181 is a wasteful number, since it uses less digits than its factorization.

2000723266181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117689603910.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 2000723266181 in words is "two trillion, seven hundred twenty-three million, two hundred sixty-six thousand, one hundred eighty-one".