20440033345 has 16 divisors (see below), whose sum is σ = 24655992192. Its totient is φ = 16266856320.

The previous prime is 20440033333. The next prime is 20440033423. The reversal of 20440033345 is 54333004402.

It is not a de Polignac number, because 20440033345 - 2⁷ = 20440033217 is a prime.

It is a Duffinian number.

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 in 15 ways as a sum of consecutive naturals, for example, 1356724 + ... + 1371706.

It is an arithmetic number, because the mean of its divisors is an integer number (1540999512).

Almost surely, 2^20440033345 is an apocalyptic number.

It is an amenable number.

20440033345 is a deficient number, since it is larger than the sum of its proper divisors (4215958847).

20440033345 is a wasteful number, since it uses less digits than its factorization.

20440033345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16392.

The product of its (nonzero) digits is 17280, while the sum is 28.

Adding to 20440033345 its reverse (54333004402), we get a palindrome (74773037747).

The spelling of 20440033345 in words is "twenty billion, four hundred forty million, thirty-three thousand, three hundred forty-five".