868131810936 has 384 divisors, whose sum is σ = 2711442988800. Its totient is φ = 248697630720.

The previous prime is 868131810919. The next prime is 868131810967. The reversal of 868131810936 is 639018131868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 985393216 + ... + 985394096.

It is an arithmetic number, because the mean of its divisors is an integer number (7061049450).

Almost surely, 2^868131810936 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 868131810936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1355721494400).

868131810936 is an abundant number, since it is smaller than the sum of its proper divisors (1843311177864).

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

868131810936 is a wasteful number, since it uses less digits than its factorization.

868131810936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 868131810936 in words is "eight hundred sixty-eight billion, one hundred thirty-one million, eight hundred ten thousand, nine hundred thirty-six".