20303321445 has 72 divisors (see below), whose sum is σ = 38752616448. Its totient is φ = 9826217280.

The previous prime is 20303321431. The next prime is 20303321449. The reversal of 20303321445 is 54412330302.

It is not a de Polignac number, because 20303321445 - 2⁷ = 20303321317 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303321449) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3302044 + ... + 3308186.

It is an arithmetic number, because the mean of its divisors is an integer number (538230784).

Almost surely, 2^20303321445 is an apocalyptic number.

It is an amenable number.

20303321445 is a deficient number, since it is larger than the sum of its proper divisors (18449295003).

20303321445 is a wasteful number, since it uses less digits than its factorization.

20303321445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6783 (or 6769 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 20303321445 its reverse (54412330302), we get a palindrome (74715651747).

The spelling of 20303321445 in words is "twenty billion, three hundred three million, three hundred twenty-one thousand, four hundred forty-five".