20002045406 has 64 divisors (see below), whose sum is σ = 35718230016. Its totient is φ = 8222860800.

The previous prime is 20002045403. The next prime is 20002045411. The reversal of 20002045406 is 60454020002.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 19400111 + ... + 19401141.

It is an arithmetic number, because the mean of its divisors is an integer number (558097344).

Almost surely, 2^20002045406 is an apocalyptic number.

20002045406 is a deficient number, since it is larger than the sum of its proper divisors (15716184610).

20002045406 is a wasteful number, since it uses less digits than its factorization.

20002045406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20002045406 its reverse (60454020002), we get a palindrome (80456065408).

The spelling of 20002045406 in words is "twenty billion, two million, forty-five thousand, four hundred six".