809245611656 has 16 divisors (see below), whose sum is σ = 1523104862400. Its totient is φ = 403084315024.

The previous prime is 809245611631. The next prime is 809245611661. The reversal of 809245611656 is 656116542908.

It is a junction number, because it is equal to n+sod(n) for n = 809245611598 and 809245611607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192309116 + ... + 192313323.

It is an arithmetic number, because the mean of its divisors is an integer number (95194053900).

Almost surely, 2^809245611656 is an apocalyptic number.

It is an amenable number.

809245611656 is a deficient number, since it is larger than the sum of its proper divisors (713859250744).

809245611656 is a wasteful number, since it uses less digits than its factorization.

809245611656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384622708 (or 384622704 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 809245611656 in words is "eight hundred nine billion, two hundred forty-five million, six hundred eleven thousand, six hundred fifty-six".