20411421140 has 96 divisors (see below), whose sum is σ = 49447093248. Its totient is φ = 7007616000.

The previous prime is 20411421133. The next prime is 20411421167. The reversal of 20411421140 is 4112411402.

It is a super-2 number, since 2×20411421140² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 243122 + ... + 316118.

It is an arithmetic number, because the mean of its divisors is an integer number (515073888).

Almost surely, 2^20411421140 is an apocalyptic number.

20411421140 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 20411421140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24723546624).

20411421140 is an abundant number, since it is smaller than the sum of its proper divisors (29035672108).

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

20411421140 is a wasteful number, since it uses less digits than its factorization.

20411421140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73089 (or 73087 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20411421140 its reverse (4112411402), we get a palindrome (24523832542).

The spelling of 20411421140 in words is "twenty billion, four hundred eleven million, four hundred twenty-one thousand, one hundred forty".