20446671652 has 24 divisors (see below), whose sum is σ = 40731711552. Its totient is φ = 8889856800.

The previous prime is 20446671631. The next prime is 20446671659. The reversal of 20446671652 is 25617664402.

It is a junction number, because it is equal to n+sod(n) for n = 20446671599 and 20446671608.

It is not an unprimeable number, because it can be changed into a prime (20446671659) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10101099 + ... + 10103122.

It is an arithmetic number, because the mean of its divisors is an integer number (1697154648).

Almost surely, 2^20446671652 is an apocalyptic number.

20446671652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20446671652 is a deficient number, since it is larger than the sum of its proper divisors (20285039900).

20446671652 is a wasteful number, since it uses less digits than its factorization.

20446671652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20204259 (or 20204257 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 20446671652 in words is "twenty billion, four hundred forty-six million, six hundred seventy-one thousand, six hundred fifty-two".