8002386560821 has 4 divisors (see below), whose sum is σ = 8002433541132. Its totient is φ = 8002339580512.

The previous prime is 8002386560801. The next prime is 8002386560837. The reversal of 8002386560821 is 1280656832008.

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 1548556248100 + 6453830312721 = 1244410^2 + 2540439^2 .

It is a cyclic number.

It is not a de Polignac number, because 8002386560821 - 2⁹ = 8002386560309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8002386560801) 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, 23233720 + ... + 23575633.

It is an arithmetic number, because the mean of its divisors is an integer number (2000608385283).

Almost surely, 2^{8002386560821} is an apocalyptic number.

It is an amenable number.

8002386560821 is a deficient number, since it is larger than the sum of its proper divisors (46980311).

8002386560821 is a wasteful number, since it uses less digits than its factorization.

8002386560821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46980310.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 8002386560821 in words is "eight trillion, two billion, three hundred eighty-six million, five hundred sixty thousand, eight hundred twenty-one".