9849869617901 has 2 divisors, whose sum is σ = 9849869617902. Its totient is φ = 9849869617900.

The previous prime is 9849869617837. The next prime is 9849869617937. The reversal of 9849869617901 is 1097169689489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5520032775625 + 4329836842276 = 2349475^2 + 2080826^2 .

It is a cyclic number.

It is not a de Polignac number, because 9849869617901 - 2⁶ = 9849869617837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9849869617001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4924934808950 + 4924934808951.

It is an arithmetic number, because the mean of its divisors is an integer number (4924934808951).

Almost surely, 2^{9849869617901} is an apocalyptic number.

It is an amenable number.

9849869617901 is a deficient number, since it is larger than the sum of its proper divisors (1).

9849869617901 is an equidigital number, since it uses as much as digits as its factorization.

9849869617901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423263232, while the sum is 77.

The spelling of 9849869617901 in words is "nine trillion, eight hundred forty-nine billion, eight hundred sixty-nine million, six hundred seventeen thousand, nine hundred one".