20023111002400 has 144 divisors (see below), whose sum is σ = 53338646733120. Its totient is φ = 7279293209600.

The previous prime is 20023111002383. The next prime is 20023111002467. The reversal of 20023111002400 is 420011132002.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34817997 + ... + 35388403.

It is an arithmetic number, because the mean of its divisors is an integer number (370407268980).

Almost surely, 2^{20023111002400} is an apocalyptic number.

20023111002400 is a gapful number since it is divisible by the number (20) 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 20023111002400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26669323366560).

20023111002400 is an abundant number, since it is smaller than the sum of its proper divisors (33315535730720).

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

20023111002400 is a wasteful number, since it uses less digits than its factorization.

20023111002400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574427 (or 574414 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20023111002400 its reverse (420011132002), we get a palindrome (20443122134402).

The spelling of 20023111002400 in words is "twenty trillion, twenty-three billion, one hundred eleven million, two thousand, four hundred".