809703294993 has 24 divisors (see below), whose sum is σ = 1171456352040. Its totient is φ = 538932545280.

The previous prime is 809703294949. The next prime is 809703295067. The reversal of 809703294993 is 399492307908.

It can be written as a sum of positive squares in 4 ways, for example, as 75653602704 + 734049692289 = 275052^2 + 856767^2 .

It is not a de Polignac number, because 809703294993 - 2¹⁰ = 809703293969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 809703294993.

It is not an unprimeable number, because it can be changed into a prime (809703294293) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43260205 + ... + 43278917.

It is an arithmetic number, because the mean of its divisors is an integer number (48810681335).

Almost surely, 2^809703294993 is an apocalyptic number.

It is an amenable number.

809703294993 is a deficient number, since it is larger than the sum of its proper divisors (361753057047).

809703294993 is a wasteful number, since it uses less digits than its factorization.

809703294993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26209 (or 26206 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 63.

The spelling of 809703294993 in words is "eight hundred nine billion, seven hundred three million, two hundred ninety-four thousand, nine hundred ninety-three".