20444544542 has 8 divisors (see below), whose sum is σ = 31086910416. Its totient is φ = 10082241072.

The previous prime is 20444544529. The next prime is 20444544551. The reversal of 20444544542 is 24544544402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20444544496 and 20444544505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70015418 + ... + 70015709.

It is an arithmetic number, because the mean of its divisors is an integer number (3885863802).

Almost surely, 2^20444544542 is an apocalyptic number.

20444544542 is a deficient number, since it is larger than the sum of its proper divisors (10642365874).

20444544542 is a wasteful number, since it uses less digits than its factorization.

20444544542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140031202.

The product of its (nonzero) digits is 409600, while the sum is 38.

The spelling of 20444544542 in words is "twenty billion, four hundred forty-four million, five hundred forty-four thousand, five hundred forty-two".