20321200144104 has 128 divisors (see below), whose sum is σ = 53401335644160. Its totient is φ = 6431733335808.

The previous prime is 20321200144099. The next prime is 20321200144117. The reversal of 20321200144104 is 40144100212302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61238457 + ... + 61569399.

It is an arithmetic number, because the mean of its divisors is an integer number (417197934720).

Almost surely, 2^{20321200144104} is an apocalyptic number.

20321200144104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20321200144104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26700667822080).

20321200144104 is an abundant number, since it is smaller than the sum of its proper divisors (33080135500056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20321200144104 is a wasteful number, since it uses less digits than its factorization.

20321200144104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331791 (or 331787 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 20321200144104 its reverse (40144100212302), we get a palindrome (60465300356406).

The spelling of 20321200144104 in words is "twenty trillion, three hundred twenty-one billion, two hundred million, one hundred forty-four thousand, one hundred four".