20340233545 has 8 divisors (see below), whose sum is σ = 24411460680. Its totient is φ = 16270066560.

The previous prime is 20340233497. The next prime is 20340233579. The reversal of 20340233545 is 54533204302.

It can be written as a sum of positive squares in 4 ways, for example, as 5837571216 + 14502662329 = 76404^2 + 120427^2 .

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

It is not a de Polignac number, because 20340233545 - 2²⁹ = 19803362633 is a prime.

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, 222196 + ... + 300085.

It is an arithmetic number, because the mean of its divisors is an integer number (3051432585).

Almost surely, 2^20340233545 is an apocalyptic number.

It is an amenable number.

20340233545 is a deficient number, since it is larger than the sum of its proper divisors (4071227135).

20340233545 is an equidigital number, since it uses as much as digits as its factorization.

20340233545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530075.

The product of its (nonzero) digits is 43200, while the sum is 31.

Adding to 20340233545 its reverse (54533204302), we get a palindrome (74873437847).

The spelling of 20340233545 in words is "twenty billion, three hundred forty million, two hundred thirty-three thousand, five hundred forty-five".