20680454528 has 16 divisors (see below), whose sum is σ = 41199343260. Its totient is φ = 10340227200.

The previous prime is 20680454527. The next prime is 20680454539. The reversal of 20680454528 is 82545408602.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20680454527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80782898 + ... + 80783153.

Almost surely, 2^20680454528 is an apocalyptic number.

It is an amenable number.

20680454528 is a deficient number, since it is larger than the sum of its proper divisors (20518888732).

20680454528 is an equidigital number, since it uses as much as digits as its factorization.

20680454528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161566065 (or 161566053 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 44.

The spelling of 20680454528 in words is "twenty billion, six hundred eighty million, four hundred fifty-four thousand, five hundred twenty-eight".