20444629983 has 16 divisors (see below), whose sum is σ = 29619840000. Its totient is φ = 12495867840.

The previous prime is 20444629949. The next prime is 20444630023. The reversal of 20444629983 is 38992644402.

It is not a de Polignac number, because 20444629983 - 2¹⁰ = 20444628959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444629943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5783358 + ... + 5786891.

It is an arithmetic number, because the mean of its divisors is an integer number (1851240000).

Almost surely, 2^20444629983 is an apocalyptic number.

20444629983 is a deficient number, since it is larger than the sum of its proper divisors (9175210017).

20444629983 is a wasteful number, since it uses less digits than its factorization.

20444629983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11570302.

The product of its (nonzero) digits is 2985984, while the sum is 51.

The spelling of 20444629983 in words is "twenty billion, four hundred forty-four million, six hundred twenty-nine thousand, nine hundred eighty-three".