20674966548864 has 32 divisors (see below), whose sum is σ = 54917879896440. Its totient is φ = 6891655516160.

The previous prime is 20674966548767. The next prime is 20674966548881. The reversal of 20674966548864 is 46884566947602.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26920528977 + ... + 26920529744.

Almost surely, 2^{20674966548864} is an apocalyptic number.

20674966548864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20674966548864 is an abundant number, since it is smaller than the sum of its proper divisors (34242913347576).

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

20674966548864 is an equidigital number, since it uses as much as digits as its factorization.

20674966548864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53841058738 (or 53841058726 counting only the distinct ones).

The product of its (nonzero) digits is 3344302080, while the sum is 75.

The spelling of 20674966548864 in words is "twenty trillion, six hundred seventy-four billion, nine hundred sixty-six million, five hundred forty-eight thousand, eight hundred sixty-four".