2040145505 has 16 divisors (see below), whose sum is σ = 2555027280. Its totient is φ = 1561878528.

The previous prime is 2040145493. The next prime is 2040145531. The reversal of 2040145505 is 5055410402.

It can be written as a sum of positive squares in 8 ways, for example, as 983700496 + 1056445009 = 31364^2 + 32503^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040145505 - 2⁴ = 2040145489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45872 + ... + 78641.

It is an arithmetic number, because the mean of its divisors is an integer number (159689205).

Almost surely, 2^2040145505 is an apocalyptic number.

It is an amenable number.

2040145505 is a deficient number, since it is larger than the sum of its proper divisors (514881775).

2040145505 is a wasteful number, since it uses less digits than its factorization.

2040145505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124660.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 2040145505 is about 45167.9699012475. The cubic root of 2040145505 is about 1268.2952937783.

Adding to 2040145505 its reverse (5055410402), we get a palindrome (7095555907).

The spelling of 2040145505 in words is "two billion, forty million, one hundred forty-five thousand, five hundred five".