816917495382 has 24 divisors (see below), whose sum is σ = 1807647225696. Its totient is φ = 266512090416.

The previous prime is 816917495327. The next prime is 816917495417. The reversal of 816917495382 is 283594719618.

816917495382 is a `hidden beast` number, since 8 + 1 + 6 + 91 + 7 + 4 + 9 + 538 + 2 = 666.

It is a super-2 number, since 2×816917495382² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 482810913 + ... + 482812604.

It is an arithmetic number, because the mean of its divisors is an integer number (75318634404).

Almost surely, 2^816917495382 is an apocalyptic number.

816917495382 is an abundant number, since it is smaller than the sum of its proper divisors (990729730314).

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

816917495382 is a wasteful number, since it uses less digits than its factorization.

816917495382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965623572 (or 965623569 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The spelling of 816917495382 in words is "eight hundred sixteen billion, nine hundred seventeen million, four hundred ninety-five thousand, three hundred eighty-two".