20043240212400 has 480 divisors, whose sum is σ = 68744510426880. Its totient is φ = 4976764416000.

The previous prime is 20043240212399. The next prime is 20043240212449. The reversal of 20043240212400 is 421204234002.

It is a super-2 number, since 2×20043240212400² (a number of 27 digits) contains 22 as substring.

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 95 ways as a sum of consecutive naturals, for example, 2129310094 + ... + 2129319506.

It is an arithmetic number, because the mean of its divisors is an integer number (143217730056).

Almost surely, 2^{20043240212400} is an apocalyptic number.

20043240212400 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 20043240212400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34372255213440).

20043240212400 is an abundant number, since it is smaller than the sum of its proper divisors (48701270214480).

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

20043240212400 is a wasteful number, since it uses less digits than its factorization.

20043240212400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045 (or 11034 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20043240212400 its reverse (421204234002), we get a palindrome (20464444446402).

The spelling of 20043240212400 in words is "twenty trillion, forty-three billion, two hundred forty million, two hundred twelve thousand, four hundred".