20628883538304 has 32 divisors (see below), whose sum is σ = 54795471899640. Its totient is φ = 6876294512640.

The previous prime is 20628883538293. The next prime is 20628883538327. The reversal of 20628883538304 is 40383538882602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26860525057 + ... + 26860525824.

Almost surely, 2^{20628883538304} is an apocalyptic number.

20628883538304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20628883538304 is an abundant number, since it is smaller than the sum of its proper divisors (34166588361336).

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

20628883538304 is an equidigital number, since it uses as much as digits as its factorization.

20628883538304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53721050898 (or 53721050886 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 60.

The spelling of 20628883538304 in words is "twenty trillion, six hundred twenty-eight billion, eight hundred eighty-three million, five hundred thirty-eight thousand, three hundred four".