20466965220 has 192 divisors, whose sum is σ = 63363444480. Its totient is φ = 4905216000.

The previous prime is 20466965213. The next prime is 20466965237. The reversal of 20466965220 is 2256966402.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4803451 + ... + 4807709.

It is an arithmetic number, because the mean of its divisors is an integer number (330017940).

Almost surely, 2^20466965220 is an apocalyptic number.

20466965220 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 20466965220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31681722240).

20466965220 is an abundant number, since it is smaller than the sum of its proper divisors (42896479260).

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

20466965220 is a wasteful number, since it uses less digits than its factorization.

20466965220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4446 (or 4444 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 20466965220 in words is "twenty billion, four hundred sixty-six million, nine hundred sixty-five thousand, two hundred twenty".