9985877017 has 2 divisors, whose sum is σ = 9985877018. Its totient is φ = 9985877016.

The previous prime is 9985876973. The next prime is 9985877029. The reversal of 9985877017 is 7107785899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7824463936 + 2161413081 = 88456^2 + 46491^2 .

It is a cyclic number.

It is not a de Polignac number, because 9985877017 - 2⁷ = 9985876889 is a prime.

It is not a weakly prime, because it can be changed into another prime (9985847017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4992938508 + 4992938509.

It is an arithmetic number, because the mean of its divisors is an integer number (4992938509).

Almost surely, 2^9985877017 is an apocalyptic number.

It is an amenable number.

9985877017 is a deficient number, since it is larger than the sum of its proper divisors (1).

9985877017 is an equidigital number, since it uses as much as digits as its factorization.

9985877017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8890560, while the sum is 61.

The square root of 9985877017 is about 99929.3601350474. The cubic root of 9985877017 is about 2153.4199773728.

The spelling of 9985877017 in words is "nine billion, nine hundred eighty-five million, eight hundred seventy-seven thousand, seventeen".