8125701712820 has 12 divisors (see below), whose sum is σ = 17063973596964. Its totient is φ = 3250280685120.

The previous prime is 8125701712813. The next prime is 8125701712831. The reversal of 8125701712820 is 282171075218.

It can be written as a sum of positive squares in 2 ways, for example, as 3507784376464 + 4617917336356 = 1872908^2 + 2148934^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203142542801 + ... + 203142542840.

It is an arithmetic number, because the mean of its divisors is an integer number (1421997799747).

Almost surely, 2^{8125701712820} is an apocalyptic number.

It is an amenable number.

8125701712820 is an abundant number, since it is smaller than the sum of its proper divisors (8938271884144).

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

8125701712820 is a wasteful number, since it uses less digits than its factorization.

8125701712820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406285085650 (or 406285085648 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 44.

The spelling of 8125701712820 in words is "eight trillion, one hundred twenty-five billion, seven hundred one million, seven hundred twelve thousand, eight hundred twenty".