9991342601 has 2 divisors, whose sum is σ = 9991342602. Its totient is φ = 9991342600.

The previous prime is 9991342553. The next prime is 9991342609. The reversal of 9991342601 is 1062431999.

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., 5622000400 + 4369342201 = 74980^2 + 66101^2 .

It is a cyclic number.

It is not a de Polignac number, because 9991342601 - 2¹⁸ = 9991080457 is a prime.

It is not a weakly prime, because it can be changed into another prime (9991342609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4995671300 + 4995671301.

It is an arithmetic number, because the mean of its divisors is an integer number (4995671301).

Almost surely, 2^9991342601 is an apocalyptic number.

It is an amenable number.

9991342601 is a deficient number, since it is larger than the sum of its proper divisors (1).

9991342601 is an equidigital number, since it uses as much as digits as its factorization.

9991342601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 9991342601 is about 99956.7036321226. The cubic root of 9991342601 is about 2153.8127838366.

The spelling of 9991342601 in words is "nine billion, nine hundred ninety-one million, three hundred forty-two thousand, six hundred one".