816731863752 has 32 divisors (see below), whose sum is σ = 2333519611200. Its totient is φ = 233351961024.

The previous prime is 816731863741. The next prime is 816731863769. The reversal of 816731863752 is 257368137618.

It is a junction number, because it is equal to n+sod(n) for n = 816731863692 and 816731863701.

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, 2430749427 + ... + 2430749762.

It is an arithmetic number, because the mean of its divisors is an integer number (72922487850).

Almost surely, 2^816731863752 is an apocalyptic number.

It is an amenable number.

816731863752 is an abundant number, since it is smaller than the sum of its proper divisors (1516787747448).

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

816731863752 is a wasteful number, since it uses less digits than its factorization.

816731863752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4861499205 (or 4861499201 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 57.

The spelling of 816731863752 in words is "eight hundred sixteen billion, seven hundred thirty-one million, eight hundred sixty-three thousand, seven hundred fifty-two".