2040100065 has 24 divisors (see below), whose sum is σ = 3537226368. Its totient is φ = 1087729440.

The previous prime is 2040100063. The next prime is 2040100067. The reversal of 2040100065 is 5600010402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2040100063) and next prime (2040100067).

It is not a de Polignac number, because 2040100065 - 2¹ = 2040100063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2040100061) 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 in 23 ways as a sum of consecutive naturals, for example, 279310 + ... + 286520.

It is an arithmetic number, because the mean of its divisors is an integer number (147384432).

Almost surely, 2^2040100065 is an apocalyptic number.

It is an amenable number.

2040100065 is a deficient number, since it is larger than the sum of its proper divisors (1497126303).

2040100065 is a wasteful number, since it uses less digits than its factorization.

2040100065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13509 (or 13506 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2040100065 is about 45167.4668871302. The cubic root of 2040100065 is about 1268.2858774947.

Adding to 2040100065 its reverse (5600010402), we get a palindrome (7640110467).

The spelling of 2040100065 in words is "two billion, forty million, one hundred thousand, sixty-five".