20466000000 has 448 divisors, whose sum is σ = 75702156000. Its totient is φ = 5443200000.

The previous prime is 20465999993. The next prime is 20466000007. The reversal of 20466000000 is 66402.

20466000000 is a `hidden beast` number, since 2 + 0 + 4 + 660 + 0 + 0 + 0 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (20465999993) and next prime (20466000007).

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

It is not an unprimeable number, because it can be changed into a prime (20466000007) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 53999811 + ... + 54000189.

Almost surely, 2^20466000000 is an apocalyptic number.

20466000000 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 20466000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37851078000).

20466000000 is an abundant number, since it is smaller than the sum of its proper divisors (55236156000).

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

20466000000 is an frugal number, since it uses more digits than its factorization.

20466000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20466000000 its reverse (66402), we get a palindrome (20466066402).

The spelling of 20466000000 in words is "twenty billion, four hundred sixty-six million", and thus it is an aban number.