10080516821 has 4 divisors (see below), whose sum is σ = 10084938444. Its totient is φ = 10076095200.

The previous prime is 10080516811. The next prime is 10080516829. The reversal of 10080516821 is 12861508001.

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 6807075025 + 3273441796 = 82505^2 + 57214^2 .

It is a cyclic number.

It is not a de Polignac number, because 10080516821 - 2¹⁸ = 10080254677 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 (10080516829) 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, 2207390 + ... + 2211951.

It is an arithmetic number, because the mean of its divisors is an integer number (2521234611).

Almost surely, 2^10080516821 is an apocalyptic number.

It is an amenable number.

10080516821 is a deficient number, since it is larger than the sum of its proper divisors (4421623).

10080516821 is an equidigital number, since it uses as much as digits as its factorization.

10080516821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421622.

The product of its (nonzero) digits is 3840, while the sum is 32.

The spelling of 10080516821 in words is "ten billion, eighty million, five hundred sixteen thousand, eight hundred twenty-one".