868763987712 has 432 divisors, whose sum is σ = 2629413128160. Its totient is φ = 275602341888.

The previous prime is 868763987701. The next prime is 868763987743. The reversal of 868763987712 is 217789367868.

868763987712 is a `hidden beast` number, since 86 + 87 + 6 + 398 + 77 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 852564739 + ... + 852565757.

Almost surely, 2^868763987712 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 868763987712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314706564080).

868763987712 is an abundant number, since it is smaller than the sum of its proper divisors (1760649140448).

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

868763987712 is a wasteful number, since it uses less digits than its factorization.

868763987712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288 (or 1271 counting only the distinct ones).

The product of its digits is 341397504, while the sum is 72.

The spelling of 868763987712 in words is "eight hundred sixty-eight billion, seven hundred sixty-three million, nine hundred eighty-seven thousand, seven hundred twelve".