800049248521 has 4 divisors (see below), whose sum is σ = 804839962752. Its totient is φ = 795258534292.

The previous prime is 800049248513. The next prime is 800049248561. The reversal of 800049248521 is 125842940008.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 800049248521 - 2³ = 800049248513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (800049248501) 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 3 ways as a sum of consecutive naturals, for example, 2395356865 + ... + 2395357198.

It is an arithmetic number, because the mean of its divisors is an integer number (201209990688).

Almost surely, 2^800049248521 is an apocalyptic number.

It is an amenable number.

800049248521 is a deficient number, since it is larger than the sum of its proper divisors (4790714231).

800049248521 is a wasteful number, since it uses less digits than its factorization.

800049248521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4790714230.

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 800049248521 in words is "eight hundred billion, forty-nine million, two hundred forty-eight thousand, five hundred twenty-one".