23420441121440 has 144 divisors (see below), whose sum is σ = 60823387568160. Its totient is φ = 8515789708800.

The previous prime is 23420441121409. The next prime is 23420441121487. The reversal of 23420441121440 is 4412114402432.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 23420441121397 and 23420441121406.

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, 257268251 + ... + 257359269.

It is an arithmetic number, because the mean of its divisors is an integer number (422384635890).

Almost surely, 2^{23420441121440} is an apocalyptic number.

23420441121440 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 23420441121440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30411693784080).

23420441121440 is an abundant number, since it is smaller than the sum of its proper divisors (37402946446720).

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

23420441121440 is a wasteful number, since it uses less digits than its factorization.

23420441121440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104347 (or 104328 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 23420441121440 its reverse (4412114402432), we get a palindrome (27832555523872).

The spelling of 23420441121440 in words is "twenty-three trillion, four hundred twenty billion, four hundred forty-one million, one hundred twenty-one thousand, four hundred forty".