20323457045 has 8 divisors (see below), whose sum is σ = 24419703096. Its totient is φ = 16237729216.

The previous prime is 20323457017. The next prime is 20323457071. The reversal of 20323457045 is 54075432302.

It can be written as a sum of positive squares in 4 ways, for example, as 3681941041 + 16641516004 = 60679^2 + 129002^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20323457045 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20323456996 and 20323457014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2625302 + ... + 2633031.

It is an arithmetic number, because the mean of its divisors is an integer number (3052462887).

Almost surely, 2^20323457045 is an apocalyptic number.

It is an amenable number.

20323457045 is a deficient number, since it is larger than the sum of its proper divisors (4096246051).

20323457045 is an equidigital number, since it uses as much as digits as its factorization.

20323457045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5259111.

The product of its (nonzero) digits is 100800, while the sum is 35.

Adding to 20323457045 its reverse (54075432302), we get a palindrome (74398889347).

The spelling of 20323457045 in words is "twenty billion, three hundred twenty-three million, four hundred fifty-seven thousand, forty-five".