20331458449 has 12 divisors (see below), whose sum is σ = 20909348208. Its totient is φ = 19769144400.

The previous prime is 20331458437. The next prime is 20331458461. The reversal of 20331458449 is 94485413302.

It is an interprime number because it is at equal distance from previous prime (20331458437) and next prime (20331458461).

It is not a de Polignac number, because 20331458449 - 2¹⁷ = 20331327377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331458429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2639694 + ... + 2647384.

It is an arithmetic number, because the mean of its divisors is an integer number (1742445684).

Almost surely, 2^20331458449 is an apocalyptic number.

It is an amenable number.

20331458449 is a deficient number, since it is larger than the sum of its proper divisors (577889759).

20331458449 is an equidigital number, since it uses as much as digits as its factorization.

20331458449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9696 (or 9659 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 20331458449 in words is "twenty billion, three hundred thirty-one million, four hundred fifty-eight thousand, four hundred forty-nine".