20443069680 has 80 divisors (see below), whose sum is σ = 69134753664. Its totient is φ = 4955895040.

The previous prime is 20443069679. The next prime is 20443069711. The reversal of 20443069680 is 8696034402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3869154 + ... + 3874433.

Almost surely, 2^20443069680 is an apocalyptic number.

20443069680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20443069680 is an abundant number, since it is smaller than the sum of its proper divisors (48691683984).

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

20443069680 is a wasteful number, since it uses less digits than its factorization.

20443069680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7743614 (or 7743608 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 20443069680 in words is "twenty billion, four hundred forty-three million, sixty-nine thousand, six hundred eighty".