800530438261 has 2 divisors, whose sum is σ = 800530438262. Its totient is φ = 800530438260.

The previous prime is 800530438241. The next prime is 800530438283. The reversal of 800530438261 is 162834035008.

800530438261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498585683236 + 301944755025 = 706106^2 + 549495^2 .

It is a cyclic number.

It is not a de Polignac number, because 800530438261 - 2⁵ = 800530438229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800530438241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400265219130 + 400265219131.

It is an arithmetic number, because the mean of its divisors is an integer number (400265219131).

Almost surely, 2^800530438261 is an apocalyptic number.

It is an amenable number.

800530438261 is a deficient number, since it is larger than the sum of its proper divisors (1).

800530438261 is an equidigital number, since it uses as much as digits as its factorization.

800530438261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 800530438261 in words is "eight hundred billion, five hundred thirty million, four hundred thirty-eight thousand, two hundred sixty-one".