809714657312 has 54 divisors (see below), whose sum is σ = 1752342022557. Its totient is φ = 368026665600.

The previous prime is 809714657293. The next prime is 809714657321. The reversal of 809714657312 is 213756417908.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 580162515856 + 229552141456 = 761684^2 + 479116^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=636284.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 55985762 + ... + 56000222.

It is a 1-persistent number, because it is pandigital, but 2⋅809714657312 = 1619429314624 is not.

Almost surely, 2^809714657312 is an apocalyptic number.

It is an amenable number.

809714657312 is an abundant number, since it is smaller than the sum of its proper divisors (942627365245).

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

809714657312 is an frugal number, since it uses more digits than its factorization.

809714657312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28954 (or 14474 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 809714657312 in words is "eight hundred nine billion, seven hundred fourteen million, six hundred fifty-seven thousand, three hundred twelve".