20243432045 has 16 divisors (see below), whose sum is σ = 25557175728. Its totient is φ = 15372725760.

The previous prime is 20243432009. The next prime is 20243432063. The reversal of 20243432045 is 54023434202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1226470441 + 19016961604 = 35021^2 + 137902^2 .

It is not a de Polignac number, because 20243432045 - 2¹² = 20243427949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20243431999 and 20243432017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1326854 + ... + 1342023.

It is an arithmetic number, because the mean of its divisors is an integer number (1597323483).

Almost surely, 2^20243432045 is an apocalyptic number.

It is an amenable number.

20243432045 is a deficient number, since it is larger than the sum of its proper divisors (5313743683).

20243432045 is a wasteful number, since it uses less digits than its factorization.

20243432045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668960.

The product of its (nonzero) digits is 23040, while the sum is 29.

Adding to 20243432045 its reverse (54023434202), we get a palindrome (74266866247).

The spelling of 20243432045 in words is "twenty billion, two hundred forty-three million, four hundred thirty-two thousand, forty-five".