20405113430024 has 32 divisors (see below), whose sum is σ = 38689928121600. Its totient is φ = 10087801975680.

The previous prime is 20405113430003. The next prime is 20405113430029. The reversal of 20405113430024 is 42003431150402.

It is not an unprimeable number, because it can be changed into a prime (20405113430029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115819169 + ... + 115995215.

It is an arithmetic number, because the mean of its divisors is an integer number (1209060253800).

Almost surely, 2^{20405113430024} is an apocalyptic number.

It is an amenable number.

20405113430024 is a deficient number, since it is larger than the sum of its proper divisors (18284814691576).

20405113430024 is a wasteful number, since it uses less digits than its factorization.

20405113430024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338933 (or 338929 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 20405113430024 its reverse (42003431150402), we get a palindrome (62408544580426).

The spelling of 20405113430024 in words is "twenty trillion, four hundred five billion, one hundred thirteen million, four hundred thirty thousand, twenty-four".