2043512065 has 16 divisors (see below), whose sum is σ = 2803272192. Its totient is φ = 1400894784.

The previous prime is 2043512063. The next prime is 2043512071. The reversal of 2043512065 is 5602153402.

It is a cyclic number.

It is not a de Polignac number, because 2043512065 - 2¹ = 2043512063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2043512063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226827 + ... + 235663.

It is an arithmetic number, because the mean of its divisors is an integer number (175204512).

Almost surely, 2^2043512065 is an apocalyptic number.

It is an amenable number.

2043512065 is a deficient number, since it is larger than the sum of its proper divisors (759760127).

2043512065 is an equidigital number, since it uses as much as digits as its factorization.

2043512065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15456.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2043512065 is about 45205.2216563529. The cubic root of 2043512065 is about 1268.9925391032.

Adding to 2043512065 its reverse (5602153402), we get a palindrome (7645665467).

The spelling of 2043512065 in words is "two billion, forty-three million, five hundred twelve thousand, sixty-five".