99505505011 has 4 divisors (see below), whose sum is σ = 108551460024. Its totient is φ = 90459550000.

The previous prime is 99505505009. The next prime is 99505505041. The reversal of 99505505011 is 11050550599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11050550599 = 11 ⋅1004595509.

It is a cyclic number.

It is not a de Polignac number, because 99505505011 - 2¹ = 99505505009 is a prime.

It is a super-2 number, since 2×99505505011² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99505505041) 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, 4522977490 + ... + 4522977511.

It is an arithmetic number, because the mean of its divisors is an integer number (27137865006).

Almost surely, 2^99505505011 is an apocalyptic number.

99505505011 is a deficient number, since it is larger than the sum of its proper divisors (9045955013).

99505505011 is a wasteful number, since it uses less digits than its factorization.

99505505011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9045955012.

The product of its (nonzero) digits is 50625, while the sum is 40.

The spelling of 99505505011 in words is "ninety-nine billion, five hundred five million, five hundred five thousand, eleven".