20400432040112 has 40 divisors (see below), whose sum is σ = 39538551007680. Its totient is φ = 10196935594560.

The previous prime is 20400432040111. The next prime is 20400432040133. The reversal of 20400432040112 is 21104023400402.

It is not an unprimeable number, because it can be changed into a prime (20400432040111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1155233939 + ... + 1155251597.

It is an arithmetic number, because the mean of its divisors is an integer number (988463775192).

Almost surely, 2^{20400432040112} is an apocalyptic number.

It is an amenable number.

20400432040112 is a deficient number, since it is larger than the sum of its proper divisors (19138118967568).

20400432040112 is a wasteful number, since it uses less digits than its factorization.

20400432040112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36801 (or 36795 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20400432040112 its reverse (21104023400402), we get a palindrome (41504455440514).

The spelling of 20400432040112 in words is "twenty trillion, four hundred billion, four hundred thirty-two million, forty thousand, one hundred twelve".