809646434211 has 16 divisors (see below), whose sum is σ = 1116931692960. Its totient is φ = 521068665600.

The previous prime is 809646434197. The next prime is 809646434323. The reversal of 809646434211 is 112434646908.

It is a happy number.

It is not a de Polignac number, because 809646434211 - 2¹⁸ = 809646172067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (809646434011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190290 + ... + 1286663.

It is an arithmetic number, because the mean of its divisors is an integer number (69808230810).

Almost surely, 2^809646434211 is an apocalyptic number.

809646434211 is a deficient number, since it is larger than the sum of its proper divisors (307285258749).

809646434211 is a wasteful number, since it uses less digits than its factorization.

809646434211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483286.

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 809646434211 in words is "eight hundred nine billion, six hundred forty-six million, four hundred thirty-four thousand, two hundred eleven".