20412044660 has 108 divisors (see below), whose sum is σ = 52627153572. Its totient is φ = 6629962752.

The previous prime is 20412044629. The next prime is 20412044701. The reversal of 20412044660 is 6644021402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14583943696 + 5828100964 = 120764^2 + 76342^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 324932 + ... + 382628.

It is an arithmetic number, because the mean of its divisors is an integer number (487288459).

Almost surely, 2^20412044660 is an apocalyptic number.

20412044660 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 20412044660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26313576786).

20412044660 is an abundant number, since it is smaller than the sum of its proper divisors (32215108912).

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

20412044660 is a wasteful number, since it uses less digits than its factorization.

20412044660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57758 (or 57730 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 20412044660 in words is "twenty billion, four hundred twelve million, forty-four thousand, six hundred sixty".