20132400044421 has 36 divisors (see below), whose sum is σ = 33979605109632. Its totient is φ = 11452640071824.

The previous prime is 20132400044417. The next prime is 20132400044473. The reversal of 20132400044421 is 12444000423102.

20132400044421 is a `hidden beast` number, since 201 + 32 + 4 + 0 + 0 + 0 + 4 + 4 + 421 = 666.

It is not a de Polignac number, because 20132400044421 - 2² = 20132400044417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132400044621) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 102259731 + ... + 102456416.

It is an arithmetic number, because the mean of its divisors is an integer number (943877919712).

Almost surely, 2^{20132400044421} is an apocalyptic number.

20132400044421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20132400044421 is a deficient number, since it is larger than the sum of its proper divisors (13847205065211).

20132400044421 is a wasteful number, since it uses less digits than its factorization.

20132400044421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204716390 (or 204716380 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 20132400044421 its reverse (12444000423102), we get a palindrome (32576400467523).

The spelling of 20132400044421 in words is "twenty trillion, one hundred thirty-two billion, four hundred million, forty-four thousand, four hundred twenty-one".