20663066304 has 140 divisors (see below), whose sum is σ = 61518280824. Its totient is φ = 6857726976.

The previous prime is 20663066269. The next prime is 20663066321. The reversal of 20663066304 is 40366036602.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1199319 + ... + 1216425.

Almost surely, 2^20663066304 is an apocalyptic number.

20663066304 is a gapful number since it is divisible by the number (24) 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 20663066304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30759140412).

20663066304 is an abundant number, since it is smaller than the sum of its proper divisors (40855214520).

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

20663066304 is a wasteful number, since it uses less digits than its factorization.

20663066304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17364 (or 17345 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The spelling of 20663066304 in words is "twenty billion, six hundred sixty-three million, sixty-six thousand, three hundred four".