809321640048 has 60 divisors (see below), whose sum is σ = 2384185833640. Its totient is φ = 255575253888.

The previous prime is 809321640007. The next prime is 809321640059. The reversal of 809321640048 is 840046123908.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 809321639985 and 809321640012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147899611 + ... + 147905082.

Almost surely, 2^809321640048 is an apocalyptic number.

It is an amenable number.

809321640048 is an abundant number, since it is smaller than the sum of its proper divisors (1574864193592).

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

809321640048 is a wasteful number, since it uses less digits than its factorization.

809321640048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295804726 (or 295804717 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 809321640048 in words is "eight hundred nine billion, three hundred twenty-one million, six hundred forty thousand, forty-eight".