20343345506 has 8 divisors (see below), whose sum is σ = 33289110864. Its totient is φ = 9246975220.

The previous prime is 20343345499. The next prime is 20343345523. The reversal of 20343345506 is 60554334302.

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

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 462348740 + ... + 462348783.

It is an arithmetic number, because the mean of its divisors is an integer number (4161138858).

Almost surely, 2^20343345506 is an apocalyptic number.

20343345506 is a deficient number, since it is larger than the sum of its proper divisors (12945765358).

20343345506 is a wasteful number, since it uses less digits than its factorization.

20343345506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924697536.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 20343345506 its reverse (60554334302), we get a palindrome (80897679808).

The spelling of 20343345506 in words is "twenty billion, three hundred forty-three million, three hundred forty-five thousand, five hundred six".