80571340872 has 384 divisors, whose sum is σ = 268286054400. Its totient is φ = 22380883200.

The previous prime is 80571340867. The next prime is 80571340877. The reversal of 80571340872 is 27804317508.

80571340872 is a `hidden beast` number, since 8 + 0 + 571 + 3 + 4 + 0 + 8 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (80571340867) and next prime (80571340877).

It is not an unprimeable number, because it can be changed into a prime (80571340877) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12591978 + ... + 12598374.

It is an arithmetic number, because the mean of its divisors is an integer number (698661600).

Almost surely, 2^80571340872 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 80571340872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134143027200).

80571340872 is an abundant number, since it is smaller than the sum of its proper divisors (187714713528).

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

80571340872 is a wasteful number, since it uses less digits than its factorization.

80571340872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6479 (or 6463 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 80571340872 in words is "eighty billion, five hundred seventy-one million, three hundred forty thousand, eight hundred seventy-two".