8521017983 has 2 divisors, whose sum is σ = 8521017984. Its totient is φ = 8521017982.

The previous prime is 8521017941. The next prime is 8521018021. The reversal of 8521017983 is 3897101258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8521017983 - 2²⁶ = 8453909119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8520017983) by changing a digit.

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 as a sum of consecutive naturals, namely, 4260508991 + 4260508992.

It is an arithmetic number, because the mean of its divisors is an integer number (4260508992).

Almost surely, 2^8521017983 is an apocalyptic number.

8521017983 is a deficient number, since it is larger than the sum of its proper divisors (1).

8521017983 is an equidigital number, since it uses as much as digits as its factorization.

8521017983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 8521017983 is about 92309.3602133608. The cubic root of 8521017983 is about 2042.5082871342.

The spelling of 8521017983 in words is "eight billion, five hundred twenty-one million, seventeen thousand, nine hundred eighty-three".