985526999993 has 2 divisors, whose sum is σ = 985526999994. Its totient is φ = 985526999992.

The previous prime is 985526999971. The next prime is 985527000011. The reversal of 985526999993 is 399999625589.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972566771344 + 12960228649 = 986188^2 + 113843^2 .

It is a cyclic number.

It is not a de Polignac number, because 985526999993 - 2²² = 985522805689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (985526999923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492763499996 + 492763499997.

It is an arithmetic number, because the mean of its divisors is an integer number (492763499997).

Almost surely, 2^985526999993 is an apocalyptic number.

It is an amenable number.

985526999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

985526999993 is an equidigital number, since it uses as much as digits as its factorization.

985526999993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3826375200, while the sum is 83.

The spelling of 985526999993 in words is "nine hundred eighty-five billion, five hundred twenty-six million, nine hundred ninety-nine thousand, nine hundred ninety-three".