7268010821 has 2 divisors, whose sum is σ = 7268010822. Its totient is φ = 7268010820.

The previous prime is 7268010809. The next prime is 7268010881. The reversal of 7268010821 is 1280108627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4598738596 + 2669272225 = 67814^2 + 51665^2 .

It is a cyclic number.

It is not a de Polignac number, because 7268010821 - 2²⁶ = 7200901957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7268010881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3634005410 + 3634005411.

It is an arithmetic number, because the mean of its divisors is an integer number (3634005411).

Almost surely, 2^7268010821 is an apocalyptic number.

It is an amenable number.

7268010821 is a deficient number, since it is larger than the sum of its proper divisors (1).

7268010821 is an equidigital number, since it uses as much as digits as its factorization.

7268010821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 7268010821 is about 85252.6294081303. The cubic root of 7268010821 is about 1937.0396999408.

The spelling of 7268010821 in words is "seven billion, two hundred sixty-eight million, ten thousand, eight hundred twenty-one".