9909155713 has 2 divisors, whose sum is σ = 9909155714. Its totient is φ = 9909155712.

The previous prime is 9909155689. The next prime is 9909155717. The reversal of 9909155713 is 3175519099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9791498304 + 117657409 = 98952^2 + 10847^2 .

It is an emirp because it is prime and its reverse (3175519099) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9909155713 is a prime.

It is not a weakly prime, because it can be changed into another prime (9909155717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4954577856 + 4954577857.

It is an arithmetic number, because the mean of its divisors is an integer number (4954577857).

Almost surely, 2^9909155713 is an apocalyptic number.

It is an amenable number.

9909155713 is a deficient number, since it is larger than the sum of its proper divisors (1).

9909155713 is an equidigital number, since it uses as much as digits as its factorization.

9909155713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 382725, while the sum is 49.

The square root of 9909155713 is about 99544.7422669826. The cubic root of 9909155713 is about 2147.8908981994.

The spelling of 9909155713 in words is "nine billion, nine hundred nine million, one hundred fifty-five thousand, seven hundred thirteen".