805131891200 has 960 divisors, whose sum is σ = 2627918802432. Its totient is φ = 237463142400.

The previous prime is 805131891199. The next prime is 805131891203. The reversal of 805131891200 is 2198131508.

It is not an unprimeable number, because it can be changed into a prime (805131891203) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 1098406034 + ... + 1098406766.

Almost surely, 2^805131891200 is an apocalyptic number.

805131891200 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805131891200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1313959401216).

805131891200 is an abundant number, since it is smaller than the sum of its proper divisors (1822786911232).

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

805131891200 is a wasteful number, since it uses less digits than its factorization.

805131891200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 38.

The spelling of 805131891200 in words is "eight hundred five billion, one hundred thirty-one million, eight hundred ninety-one thousand, two hundred".