8521186801 has 2 divisors, whose sum is σ = 8521186802. Its totient is φ = 8521186800.

The previous prime is 8521186789. The next prime is 8521186853. The reversal of 8521186801 is 1086811258.

8521186801 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7929724401 + 591462400 = 89049^2 + 24320^2 .

It is a cyclic number.

It is not a de Polignac number, because 8521186801 - 2⁵ = 8521186769 is a prime.

It is a super-2 number, since 2×8521186801² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8521186501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4260593400 + 4260593401.

It is an arithmetic number, because the mean of its divisors is an integer number (4260593401).

Almost surely, 2^8521186801 is an apocalyptic number.

It is an amenable number.

8521186801 is a deficient number, since it is larger than the sum of its proper divisors (1).

8521186801 is an equidigital number, since it uses as much as digits as its factorization.

8521186801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 40.

The square root of 8521186801 is about 92310.2746231426. The cubic root of 8521186801 is about 2042.5217757372.

The spelling of 8521186801 in words is "eight billion, five hundred twenty-one million, one hundred eighty-six thousand, eight hundred one".