20444350330331 has 4 divisors (see below), whose sum is σ = 20444652101832. Its totient is φ = 20444048558832.

The previous prime is 20444350330307. The next prime is 20444350330351. The reversal of 20444350330331 is 13303305344402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20444350330331 is a prime.

It is a super-2 number, since 2×20444350330331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20444350330291 and 20444350330300.

It is not an unprimeable number, because it can be changed into a prime (20444350330351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150784106 + ... + 150919631.

It is an arithmetic number, because the mean of its divisors is an integer number (5111163025458).

Almost surely, 2^{20444350330331} is an apocalyptic number.

20444350330331 is a deficient number, since it is larger than the sum of its proper divisors (301771501).

20444350330331 is an equidigital number, since it uses as much as digits as its factorization.

20444350330331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301771500.

The product of its (nonzero) digits is 155520, while the sum is 35.

Adding to 20444350330331 its reverse (13303305344402), we get a palindrome (33747655674733).

The spelling of 20444350330331 in words is "twenty trillion, four hundred forty-four billion, three hundred fifty million, three hundred thirty thousand, three hundred thirty-one".