20464246336 has 14 divisors (see below), whose sum is σ = 40608738950. Its totient is φ = 10232123136.

The previous prime is 20464246279. The next prime is 20464246337. The reversal of 20464246336 is 63364246402.

It can be written as a sum of positive squares in only one way, i.e., 20277760000 + 186486336 = 142400^2 + 13656^2 .

It is not an unprimeable number, because it can be changed into a prime (20464246337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159876861 + ... + 159876988.

Almost surely, 2^20464246336 is an apocalyptic number.

It is an amenable number.

20464246336 is a deficient number, since it is larger than the sum of its proper divisors (20144492614).

20464246336 is an equidigital number, since it uses as much as digits as its factorization.

20464246336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319753861 (or 319753851 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 40.

The spelling of 20464246336 in words is "twenty billion, four hundred sixty-four million, two hundred forty-six thousand, three hundred thirty-six".