20444634616 has 16 divisors (see below), whose sum is σ = 43809931440. Its totient is φ = 8761986240.

The previous prime is 20444634593. The next prime is 20444634631. The reversal of 20444634616 is 61643644402.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 182541325 + ... + 182541436.

It is an arithmetic number, because the mean of its divisors is an integer number (2738120715).

Almost surely, 2^20444634616 is an apocalyptic number.

It is an amenable number.

20444634616 is an abundant number, since it is smaller than the sum of its proper divisors (23365296824).

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

20444634616 is a wasteful number, since it uses less digits than its factorization.

20444634616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365082774 (or 365082770 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 20444634616 in words is "twenty billion, four hundred forty-four million, six hundred thirty-four thousand, six hundred sixteen".