99880008866 has 16 divisors (see below), whose sum is σ = 163642070880. Its totient is φ = 45343877280.

The previous prime is 99880008859. The next prime is 99880008871. The reversal of 99880008866 is 66880008899.

It is a happy number.

99880008866 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99880008799 and 99880008808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2788136 + ... + 2823731.

It is an arithmetic number, because the mean of its divisors is an integer number (10227629430).

Almost surely, 2^99880008866 is an apocalyptic number.

99880008866 is a deficient number, since it is larger than the sum of its proper divisors (63762062014).

99880008866 is a wasteful number, since it uses less digits than its factorization.

99880008866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5612689.

The product of its (nonzero) digits is 11943936, while the sum is 62.

The spelling of 99880008866 in words is "ninety-nine billion, eight hundred eighty million, eight thousand, eight hundred sixty-six".