20444629984 has 24 divisors (see below), whose sum is σ = 40260054240. Its totient is φ = 10219854336.

The previous prime is 20444629949. The next prime is 20444630023. The reversal of 20444629984 is 48992644402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61977 + ... + 211495.

It is an arithmetic number, because the mean of its divisors is an integer number (1677502260).

Almost surely, 2^20444629984 is an apocalyptic number.

It is an amenable number.

20444629984 is a deficient number, since it is larger than the sum of its proper divisors (19815424256).

20444629984 is a wasteful number, since it uses less digits than its factorization.

20444629984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153802 (or 153794 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 20444629984 in words is "twenty billion, four hundred forty-four million, six hundred twenty-nine thousand, nine hundred eighty-four".