867785271936 has 256 divisors, whose sum is σ = 2626263751680. Its totient is φ = 251308851200.

The previous prime is 867785271911. The next prime is 867785272009. The reversal of 867785271936 is 639172587768.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132220591 + ... + 132227153.

It is an arithmetic number, because the mean of its divisors is an integer number (10258842780).

Almost surely, 2^867785271936 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 867785271936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1313131875840).

867785271936 is an abundant number, since it is smaller than the sum of its proper divisors (1758478479744).

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

867785271936 is a wasteful number, since it uses less digits than its factorization.

867785271936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7975 (or 7963 counting only the distinct ones).

The product of its digits is 213373440, while the sum is 69.

The spelling of 867785271936 in words is "eight hundred sixty-seven billion, seven hundred eighty-five million, two hundred seventy-one thousand, nine hundred thirty-six".