866810783352 has 32 divisors (see below), whose sum is σ = 2167050344400. Its totient is φ = 288933809664.

The previous prime is 866810783347. The next prime is 866810783359. The reversal of 866810783352 is 253387018668.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 866810783292 and 866810783301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866810783359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3522478 + ... + 3760514.

Almost surely, 2^866810783352 is an apocalyptic number.

It is an amenable number.

866810783352 is an abundant number, since it is smaller than the sum of its proper divisors (1300239561048).

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

866810783352 is a wasteful number, since it uses less digits than its factorization.

866810783352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389775 (or 389771 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 866810783352 in words is "eight hundred sixty-six billion, eight hundred ten million, seven hundred eighty-three thousand, three hundred fifty-two".