20320271445 has 16 divisors (see below), whose sum is σ = 34424930880. Its totient is φ = 10199979264.

The previous prime is 20320271441. The next prime is 20320271471. The reversal of 20320271445 is 54417202302.

It is not a de Polignac number, because 20320271445 - 2² = 20320271441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320271441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39843415 + ... + 39843924.

It is an arithmetic number, because the mean of its divisors is an integer number (2151558180).

Almost surely, 2^20320271445 is an apocalyptic number.

It is an amenable number.

20320271445 is a deficient number, since it is larger than the sum of its proper divisors (14104659435).

20320271445 is a wasteful number, since it uses less digits than its factorization.

20320271445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79687364.

The product of its (nonzero) digits is 13440, while the sum is 30.

Adding to 20320271445 its reverse (54417202302), we get a palindrome (74737473747).

The spelling of 20320271445 in words is "twenty billion, three hundred twenty million, two hundred seventy-one thousand, four hundred forty-five".