20628604128000 has 288 divisors, whose sum is σ = 74746813220352. Its totient is φ = 5000873472000.

The previous prime is 20628604127969. The next prime is 20628604128053. The reversal of 20628604128000 is 82140682602.

It is a self number, because there is not a number n which added to its sum of digits gives 20628604128000.

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 31 ways as a sum of consecutive naturals, for example, 8711332 + ... + 10823331.

It is an arithmetic number, because the mean of its divisors is an integer number (259537545904).

Almost surely, 2^{20628604128000} is an apocalyptic number.

20628604128000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20628604128000 is an abundant number, since it is smaller than the sum of its proper divisors (54118209092352).

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

20628604128000 is a wasteful number, since it uses less digits than its factorization.

20628604128000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19534708 (or 19534684 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The spelling of 20628604128000 in words is "twenty trillion, six hundred twenty-eight billion, six hundred four million, one hundred twenty-eight thousand".