2065504040 has 16 divisors (see below), whose sum is σ = 4647384180. Its totient is φ = 826201600.

The previous prime is 2065504039. The next prime is 2065504081. The reversal of 2065504040 is 404055602.

It can be written as a sum of positive squares in 2 ways, for example, as 2062794724 + 2709316 = 45418^2 + 1646^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25818761 + ... + 25818840.

Almost surely, 2^2065504040 is an apocalyptic number.

2065504040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2065504040 is an abundant number, since it is smaller than the sum of its proper divisors (2581880140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2065504040 is a wasteful number, since it uses less digits than its factorization.

2065504040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51637612 (or 51637608 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2065504040 is about 45447.8166692307. The cubic root of 2065504040 is about 1273.5285426316.

Adding to 2065504040 its reverse (404055602), we get a palindrome (2469559642).

The spelling of 2065504040 in words is "two billion, sixty-five million, five hundred four thousand, forty".