20446059840 has 56 divisors (see below), whose sum is σ = 64916243040. Its totient is φ = 5452282368.

The previous prime is 20446059811. The next prime is 20446059853. The reversal of 20446059840 is 4895064402.

It is a junction number, because it is equal to n+sod(n) for n = 20446059792 and 20446059801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10648030 + ... + 10649949.

Almost surely, 2^20446059840 is an apocalyptic number.

20446059840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20446059840 is an abundant number, since it is smaller than the sum of its proper divisors (44470183200).

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

20446059840 is a wasteful number, since it uses less digits than its factorization.

20446059840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21297999 (or 21297989 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 20446059840 in words is "twenty billion, four hundred forty-six million, fifty-nine thousand, eight hundred forty".