20133453344 has 12 divisors (see below), whose sum is σ = 39637736334. Its totient is φ = 10066726656.

The previous prime is 20133453337. The next prime is 20133453371. The reversal of 20133453344 is 44335433102.

It can be written as a sum of positive squares in only one way, i.e., 20056224400 + 77228944 = 141620^2 + 8788^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 629170417 = 20133453344 / (2 + 0 + 1 + 3 + 3 + 4 + 5 + 3 + 3 + 4 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 20133453344.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314585177 + ... + 314585240.

Almost surely, 2^20133453344 is an apocalyptic number.

It is an amenable number.

20133453344 is a deficient number, since it is larger than the sum of its proper divisors (19504282990).

20133453344 is an equidigital number, since it uses as much as digits as its factorization.

20133453344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629170427 (or 629170419 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 32.

Adding to 20133453344 its reverse (44335433102), we get a palindrome (64468886446).

The spelling of 20133453344 in words is "twenty billion, one hundred thirty-three million, four hundred fifty-three thousand, three hundred forty-four".