20605443446 has 12 divisors (see below), whose sum is σ = 35954396388. Its totient is φ = 8830904292.

The previous prime is 20605443427. The next prime is 20605443451. The reversal of 20605443446 is 64434450602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105129716 + ... + 105129911.

It is an arithmetic number, because the mean of its divisors is an integer number (2996199699).

Almost surely, 2^20605443446 is an apocalyptic number.

20605443446 is a deficient number, since it is larger than the sum of its proper divisors (15348952942).

20605443446 is a wasteful number, since it uses less digits than its factorization.

20605443446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210259643 (or 210259636 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 38.

The spelling of 20605443446 in words is "twenty billion, six hundred five million, four hundred forty-three thousand, four hundred forty-six".