20448958329 has 16 divisors (see below), whose sum is σ = 30562852800. Its totient is φ = 13511994048.

The previous prime is 20448958307. The next prime is 20448958333. The reversal of 20448958329 is 92385984402.

It is not a de Polignac number, because 20448958329 - 2⁸ = 20448958073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20448958379) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3348139 + ... + 3354240.

It is an arithmetic number, because the mean of its divisors is an integer number (1910178300).

Almost surely, 2^20448958329 is an apocalyptic number.

It is an amenable number.

20448958329 is a deficient number, since it is larger than the sum of its proper divisors (10113894471).

20448958329 is a wasteful number, since it uses less digits than its factorization.

20448958329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6702501 (or 6702495 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 20448958329 in words is "twenty billion, four hundred forty-eight million, nine hundred fifty-eight thousand, three hundred twenty-nine".