99899577599899 has 8 divisors (see below), whose sum is σ = 124550122722048. Its totient is φ = 77843826701160.

The previous prime is 99899577599869. The next prime is 99899577599911.

99899577599899 is nontrivially palindromic in base 10.

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 99899577599899 - 2²⁷ = 99899443382171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99899577599849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648698555767 + ... + 648698555920.

It is an arithmetic number, because the mean of its divisors is an integer number (15568765340256).

Almost surely, 2^{99899577599899} is an apocalyptic number.

99899577599899 is a deficient number, since it is larger than the sum of its proper divisors (24650545122149).

99899577599899 is a wasteful number, since it uses less digits than its factorization.

99899577599899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297397111705.

The product of its digits is 3374862926400, while the sum is 112.

The spelling of 99899577599899 in words is "ninety-nine trillion, eight hundred ninety-nine billion, five hundred seventy-seven million, five hundred ninety-nine thousand, eight hundred ninety-nine".