864352056789 has 192 divisors, whose sum is σ = 1434738393088. Its totient is φ = 497922163200.

The previous prime is 864352056751. The next prime is 864352056791. The reversal of 864352056789 is 987650253468.

It is a happy number.

864352056789 is a `hidden beast` number, since 8 + 6 + 43 + 5 + 20 + 567 + 8 + 9 = 666.

It is not a de Polignac number, because 864352056789 - 2⁷ = 864352056661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864352056719) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2611335354 + ... + 2611335684.

Almost surely, 2^864352056789 is an apocalyptic number.

It is an amenable number.

864352056789 is a deficient number, since it is larger than the sum of its proper divisors (570386336299).

864352056789 is a wasteful number, since it uses less digits than its factorization.

864352056789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 63.

The spelling of 864352056789 in words is "eight hundred sixty-four billion, three hundred fifty-two million, fifty-six thousand, seven hundred eighty-nine".