800261887847 has 2 divisors, whose sum is σ = 800261887848. Its totient is φ = 800261887846.

The previous prime is 800261887823. The next prime is 800261887903. The reversal of 800261887847 is 748788162008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 800261887847 - 2²⁰ = 800260839271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800261887247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400130943923 + 400130943924.

It is an arithmetic number, because the mean of its divisors is an integer number (400130943924).

Almost surely, 2^800261887847 is an apocalyptic number.

800261887847 is a deficient number, since it is larger than the sum of its proper divisors (1).

800261887847 is an equidigital number, since it uses as much as digits as its factorization.

800261887847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9633792, while the sum is 59.

The spelling of 800261887847 in words is "eight hundred billion, two hundred sixty-one million, eight hundred eighty-seven thousand, eight hundred forty-seven".