865922981382 has 12 divisors (see below), whose sum is σ = 1876166459700. Its totient is φ = 288640993788.

The previous prime is 865922981381. The next prime is 865922981393. The reversal of 865922981382 is 283189229568.

865922981382 is a `hidden beast` number, since 8 + 6 + 592 + 2 + 9 + 8 + 1 + 38 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865922981381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24053416132 + ... + 24053416167.

It is an arithmetic number, because the mean of its divisors is an integer number (156347204975).

Almost surely, 2^865922981382 is an apocalyptic number.

865922981382 is an abundant number, since it is smaller than the sum of its proper divisors (1010243478318).

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

865922981382 is a wasteful number, since it uses less digits than its factorization.

865922981382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48106832307 (or 48106832304 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 63.

The spelling of 865922981382 in words is "eight hundred sixty-five billion, nine hundred twenty-two million, nine hundred eighty-one thousand, three hundred eighty-two".