20004421435145 has 16 divisors (see below), whose sum is σ = 27440603275008. Its totient is φ = 13714333473600.

The previous prime is 20004421435127. The next prime is 20004421435217. The reversal of 20004421435145 is 54153412440002.

It is a happy number.

It is not a de Polignac number, because 20004421435145 - 2²⁴ = 20004404657929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62005181 + ... + 62326970.

It is an arithmetic number, because the mean of its divisors is an integer number (1715037704688).

Almost surely, 2^{20004421435145} is an apocalyptic number.

It is an amenable number.

20004421435145 is a deficient number, since it is larger than the sum of its proper divisors (7436181839863).

20004421435145 is a wasteful number, since it uses less digits than its factorization.

20004421435145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124336760.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 20004421435145 its reverse (54153412440002), we get a palindrome (74157833875147).

The spelling of 20004421435145 in words is "twenty trillion, four billion, four hundred twenty-one million, four hundred thirty-five thousand, one hundred forty-five".