20002045405 has 16 divisors (see below), whose sum is σ = 24160915584. Its totient is φ = 15896088000.

The previous prime is 20002045403. The next prime is 20002045411. The reversal of 20002045405 is 50454020002.

It is not a de Polignac number, because 20002045405 - 2¹ = 20002045403 is a prime.

It is a super-2 number, since 2×20002045405² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002045403) 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, 2348655 + ... + 2357155.

It is an arithmetic number, because the mean of its divisors is an integer number (1510057224).

Almost surely, 2^20002045405 is an apocalyptic number.

It is an amenable number.

20002045405 is a deficient number, since it is larger than the sum of its proper divisors (4158870179).

20002045405 is a wasteful number, since it uses less digits than its factorization.

20002045405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556.

The product of its (nonzero) digits is 1600, while the sum is 22.

Adding to 20002045405 its reverse (50454020002), we get a palindrome (70456065407).

The spelling of 20002045405 in words is "twenty billion, two million, forty-five thousand, four hundred five".