99665051907 has 8 divisors (see below), whose sum is σ = 132922890576. Its totient is φ = 66425290592.

The previous prime is 99665051891. The next prime is 99665051909. The reversal of 99665051907 is 70915056699.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99665051907 - 2⁴ = 99665051891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99665051909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4506468 + ... + 4528529.

It is an arithmetic number, because the mean of its divisors is an integer number (16615361322).

Almost surely, 2^99665051907 is an apocalyptic number.

99665051907 is a deficient number, since it is larger than the sum of its proper divisors (33257838669).

99665051907 is a wasteful number, since it uses less digits than its factorization.

99665051907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9038677.

The product of its (nonzero) digits is 4592700, while the sum is 57.

The spelling of 99665051907 in words is "ninety-nine billion, six hundred sixty-five million, fifty-one thousand, nine hundred seven".