2040645601 has 2 divisors, whose sum is σ = 2040645602. Its totient is φ = 2040645600.

The previous prime is 2040645533. The next prime is 2040645613. The reversal of 2040645601 is 1065460402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1065957201 + 974688400 = 32649^2 + 31220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040645601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2040645601.

It is not a weakly prime, because it can be changed into another prime (2040645641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020322800 + 1020322801.

It is an arithmetic number, because the mean of its divisors is an integer number (1020322801).

Almost surely, 2^2040645601 is an apocalyptic number.

It is an amenable number.

2040645601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040645601 is an equidigital number, since it uses as much as digits as its factorization.

2040645601 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 28.

The square root of 2040645601 is about 45173.5055203822. The cubic root of 2040645601 is about 1268.3989167116.

The spelling of 2040645601 in words is "two billion, forty million, six hundred forty-five thousand, six hundred one".