20444542141 has 8 divisors (see below), whose sum is σ = 21032057144. Its totient is φ = 19858867200.

The previous prime is 20444542123. The next prime is 20444542199. The reversal of 20444542141 is 14124544402.

It can be written as a sum of positive squares in 4 ways, for example, as 7713933241 + 12730608900 = 87829^2 + 112830^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20444542141 - 2¹¹ = 20444540093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444546141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 437460 + ... + 481933.

It is an arithmetic number, because the mean of its divisors is an integer number (2629007143).

Almost surely, 2^20444542141 is an apocalyptic number.

It is an amenable number.

20444542141 is a deficient number, since it is larger than the sum of its proper divisors (587515003).

20444542141 is an equidigital number, since it uses as much as digits as its factorization.

20444542141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920031.

The product of its (nonzero) digits is 20480, while the sum is 31.

The spelling of 20444542141 in words is "twenty billion, four hundred forty-four million, five hundred forty-two thousand, one hundred forty-one".