868786535936 has 120 divisors (see below), whose sum is σ = 1912178628360. Its totient is φ = 394044231680.

The previous prime is 868786535887. The next prime is 868786535959. The reversal of 868786535936 is 639535687868.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28916570 + ... + 28946598.

It is an arithmetic number, because the mean of its divisors is an integer number (15934821903).

Almost surely, 2^868786535936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868786535936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (956089314180).

868786535936 is an abundant number, since it is smaller than the sum of its proper divisors (1043392092424).

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

868786535936 is a wasteful number, since it uses less digits than its factorization.

868786535936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30536 (or 30509 counting only the distinct ones).

The product of its digits is 1567641600, while the sum is 74.

The spelling of 868786535936 in words is "eight hundred sixty-eight billion, seven hundred eighty-six million, five hundred thirty-five thousand, nine hundred thirty-six".