99011879999 has 4 divisors (see below), whose sum is σ = 99094322400. Its totient is φ = 98929437600.

The previous prime is 99011879957. The next prime is 99011880017. The reversal of 99011879999 is 99997811099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99997811099 = 109 ⋅917411111.

It is a cyclic number.

It is not a de Polignac number, because 99011879999 - 2¹⁶ = 99011814463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99011879909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41219399 + ... + 41221800.

It is an arithmetic number, because the mean of its divisors is an integer number (24773580600).

Almost surely, 2^99011879999 is an apocalyptic number.

99011879999 is a deficient number, since it is larger than the sum of its proper divisors (82442401).

99011879999 is a wasteful number, since it uses less digits than its factorization.

99011879999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82442400.

The product of its (nonzero) digits is 29760696, while the sum is 71.

The spelling of 99011879999 in words is "ninety-nine billion, eleven million, eight hundred seventy-nine thousand, nine hundred ninety-nine".