20442239033 has 8 divisors (see below), whose sum is σ = 21650900040. Its totient is φ = 19234264320.

The previous prime is 20442239021. The next prime is 20442239063. The reversal of 20442239033 is 33093224402.

It can be written as a sum of positive squares in 4 ways, for example, as 512705449 + 19929533584 = 22643^2 + 141172^2 .

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 20442239033 - 2⁸ = 20442238777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20442239003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109598 + ... + 229991.

It is an arithmetic number, because the mean of its divisors is an integer number (2706362505).

Almost surely, 2^20442239033 is an apocalyptic number.

It is an amenable number.

20442239033 is a deficient number, since it is larger than the sum of its proper divisors (1208661007).

20442239033 is a wasteful number, since it uses less digits than its factorization.

20442239033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343147.

The product of its (nonzero) digits is 31104, while the sum is 32.

The spelling of 20442239033 in words is "twenty billion, four hundred forty-two million, two hundred thirty-nine thousand, thirty-three".