2040645161 has 2 divisors, whose sum is σ = 2040645162. Its totient is φ = 2040645160.

The previous prime is 2040645143. The next prime is 2040645179. The reversal of 2040645161 is 1615460402.

It is a balanced prime because it is at equal distance from previous prime (2040645143) and next prime (2040645179).

It can be written as a sum of positive squares in only one way, i.e., 1766941225 + 273703936 = 42035^2 + 16544^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040645161 - 2⁶ = 2040645097 is a prime.

It is a super-2 number, since 2×2040645161² = 8328465346225431842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2040645181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020322580 + 1020322581.

It is an arithmetic number, because the mean of its divisors is an integer number (1020322581).

Almost surely, 2^2040645161 is an apocalyptic number.

It is an amenable number.

2040645161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040645161 is an equidigital number, since it uses as much as digits as its factorization.

2040645161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2040645161 is about 45173.5006502706. The cubic root of 2040645161 is about 1268.3988255484.

The spelling of 2040645161 in words is "two billion, forty million, six hundred forty-five thousand, one hundred sixty-one".