805791236980 has 72 divisors (see below), whose sum is σ = 1740545457336. Its totient is φ = 313350336000.

The previous prime is 805791236963. The next prime is 805791236983. The reversal of 805791236980 is 89632197508.

It can be written as a sum of positive squares in 12 ways, for example, as 3107839504 + 802683397476 = 55748^2 + 895926^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805791236983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35610070 + ... + 35632690.

It is an arithmetic number, because the mean of its divisors is an integer number (24174242463).

Almost surely, 2^805791236980 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 805791236980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870272728668).

805791236980 is an abundant number, since it is smaller than the sum of its proper divisors (934754220356).

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

805791236980 is a wasteful number, since it uses less digits than its factorization.

805791236980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24005 (or 23966 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 805791236980 in words is "eight hundred five billion, seven hundred ninety-one million, two hundred thirty-six thousand, nine hundred eighty".