20844308363788 has 48 divisors (see below), whose sum is σ = 47258350961920. Its totient is φ = 7812094745664.

The previous prime is 20844308363773. The next prime is 20844308363789. The reversal of 20844308363788 is 88736380344802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20844308363789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1506955806 + ... + 1506969637.

Almost surely, 2^{20844308363788} is an apocalyptic number.

20844308363788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20844308363788 is an abundant number, since it is smaller than the sum of its proper divisors (26414042598132).

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

20844308363788 is a wasteful number, since it uses less digits than its factorization.

20844308363788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013925486 (or 3013925484 counting only the distinct ones).

The product of its (nonzero) digits is 148635648, while the sum is 64.

The spelling of 20844308363788 in words is "twenty trillion, eight hundred forty-four billion, three hundred eight million, three hundred sixty-three thousand, seven hundred eighty-eight".