809346578780 has 24 divisors (see below), whose sum is σ = 1739154045552. Its totient is φ = 316209825792.

The previous prime is 809346578779. The next prime is 809346578797. The reversal of 809346578780 is 87875643908.

809346578780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470549477 + ... + 470551196.

It is an arithmetic number, because the mean of its divisors is an integer number (72464751898).

Almost surely, 2^809346578780 is an apocalyptic number.

It is an amenable number.

809346578780 is an abundant number, since it is smaller than the sum of its proper divisors (929807466772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809346578780 is a wasteful number, since it uses less digits than its factorization.

809346578780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941100725 (or 941100723 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 809346578780 in words is "eight hundred nine billion, three hundred forty-six million, five hundred seventy-eight thousand, seven hundred eighty".