20441004012 has 144 divisors (see below), whose sum is σ = 60778667040. Its totient is φ = 5710694400.

The previous prime is 20441003977. The next prime is 20441004083. The reversal of 20441004012 is 21040014402.

20441004012 is a `hidden beast` number, since 204 + 410 + 0 + 40 + 12 = 666.

It is a super-2 number, since 2×20441004012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5254164 + ... + 5258052.

Almost surely, 2^20441004012 is an apocalyptic number.

20441004012 is a gapful number since it is divisible by the number (22) 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 20441004012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30389333520).

20441004012 is an abundant number, since it is smaller than the sum of its proper divisors (40337663028).

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

20441004012 is a wasteful number, since it uses less digits than its factorization.

20441004012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4944 (or 4939 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20441004012 its reverse (21040014402), we get a palindrome (41481018414).

The spelling of 20441004012 in words is "twenty billion, four hundred forty-one million, four thousand, twelve".