99911016995 has 4 divisors (see below), whose sum is σ = 119893220400. Its totient is φ = 79928813592.

The previous prime is 99911016991. The next prime is 99911017013. The reversal of 99911016995 is 59961011999.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59961011999 = 7 ⋅8565858857.

It is a cyclic number.

It is not a de Polignac number, because 99911016995 - 2² = 99911016991 is a prime.

It is a super-2 number, since 2×99911016995² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99911016991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9991101695 + ... + 9991101704.

It is an arithmetic number, because the mean of its divisors is an integer number (29973305100).

Almost surely, 2^99911016995 is an apocalyptic number.

99911016995 is a deficient number, since it is larger than the sum of its proper divisors (19982203405).

99911016995 is a wasteful number, since it uses less digits than its factorization.

99911016995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19982203404.

The product of its (nonzero) digits is 1771470, while the sum is 59.

The spelling of 99911016995 in words is "ninety-nine billion, nine hundred eleven million, sixteen thousand, nine hundred ninety-five".