20004304354545 has 64 divisors (see below), whose sum is σ = 37268472729600. Its totient is φ = 8974010443008.

The previous prime is 20004304354523. The next prime is 20004304354549. The reversal of 20004304354545 is 54545340340002.

It is not a de Polignac number, because 20004304354545 - 2⁶ = 20004304354481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20004304354549) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6404109 + ... + 9001178.

It is an arithmetic number, because the mean of its divisors is an integer number (582319886400).

Almost surely, 2^{20004304354545} is an apocalyptic number.

It is an amenable number.

20004304354545 is a deficient number, since it is larger than the sum of its proper divisors (17264168375055).

20004304354545 is a wasteful number, since it uses less digits than its factorization.

20004304354545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15405534.

The product of its (nonzero) digits is 576000, while the sum is 39.

Adding to 20004304354545 its reverse (54545340340002), we get a palindrome (74549644694547).

The spelling of 20004304354545 in words is "twenty trillion, four billion, three hundred four million, three hundred fifty-four thousand, five hundred forty-five".