20311144404004 has 36 divisors (see below), whose sum is σ = 36042122930800. Its totient is φ = 10014836589216.

The previous prime is 20311144403993. The next prime is 20311144404013. The reversal of 20311144404004 is 40040444111302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11521027 + ... + 13166485.

Almost surely, 2^{20311144404004} is an apocalyptic number.

It is an amenable number.

20311144404004 is a deficient number, since it is larger than the sum of its proper divisors (15730978526796).

20311144404004 is a wasteful number, since it uses less digits than its factorization.

20311144404004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645900 (or 1645749 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 20311144404004 its reverse (40040444111302), we get a palindrome (60351588515306).

The spelling of 20311144404004 in words is "twenty trillion, three hundred eleven billion, one hundred forty-four million, four hundred four thousand, four".