2044164160261 has 2 divisors, whose sum is σ = 2044164160262. Its totient is φ = 2044164160260.

The previous prime is 2044164160189. The next prime is 2044164160267. The reversal of 2044164160261 is 1620614614402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1440885736161 + 603278424100 = 1200369^2 + 776710^2 .

It is a cyclic number.

It is not a de Polignac number, because 2044164160261 - 2²¹ = 2044162063109 is a prime.

It is a super-2 number, since 2×2044164160261² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2044164160261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2044164160267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022082080130 + 1022082080131.

It is an arithmetic number, because the mean of its divisors is an integer number (1022082080131).

Almost surely, 2^{2044164160261} is an apocalyptic number.

It is an amenable number.

2044164160261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2044164160261 is an equidigital number, since it uses as much as digits as its factorization.

2044164160261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 37.

Adding to 2044164160261 its reverse (1620614614402), we get a palindrome (3664778774663).

The spelling of 2044164160261 in words is "two trillion, forty-four billion, one hundred sixty-four million, one hundred sixty thousand, two hundred sixty-one".