20073248449 has 4 divisors (see below), whose sum is σ = 20765429460. Its totient is φ = 19381067440.

The previous prime is 20073248417. The next prime is 20073248453. The reversal of 20073248449 is 94484237002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3380608449 + 16692640000 = 58143^2 + 129200^2 .

It is a cyclic number.

It is not a de Polignac number, because 20073248449 - 2⁵ = 20073248417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20073248479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346090462 + ... + 346090519.

It is an arithmetic number, because the mean of its divisors is an integer number (5191357365).

Almost surely, 2^20073248449 is an apocalyptic number.

20073248449 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20073248449 is a deficient number, since it is larger than the sum of its proper divisors (692181011).

20073248449 is an equidigital number, since it uses as much as digits as its factorization.

20073248449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692181010.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 20073248449 in words is "twenty billion, seventy-three million, two hundred forty-eight thousand, four hundred forty-nine".