20412213444 has 144 divisors (see below), whose sum is σ = 59960549376. Its totient is φ = 5734411200.

The previous prime is 20412213431. The next prime is 20412213461. The reversal of 20412213444 is 44431221402.

20412213444 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 2 + 213 + 444 = 666.

It is a super-2 number, since 2×20412213444² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7710129 + ... + 7712775.

It is an arithmetic number, because the mean of its divisors is an integer number (416392704).

Almost surely, 2^20412213444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20412213444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29980274688).

20412213444 is an abundant number, since it is smaller than the sum of its proper divisors (39548335932).

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

20412213444 is a wasteful number, since it uses less digits than its factorization.

20412213444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166 (or 3161 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 20412213444 its reverse (44431221402), we get a palindrome (64843434846).

The spelling of 20412213444 in words is "twenty billion, four hundred twelve million, two hundred thirteen thousand, four hundred forty-four".