99881118866 has 16 divisors (see below), whose sum is σ = 157199410368. Its totient is φ = 47505308400.

The previous prime is 99881118811. The next prime is 99881118901. The reversal of 99881118866 is 66881118899.

It is a super-2 number, since 2×99881118866² (a number of 23 digits) contains 22 as substring.

99881118866 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

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, 5989820 + ... + 6006471.

It is an arithmetic number, because the mean of its divisors is an integer number (9824963148).

Almost surely, 2^99881118866 is an apocalyptic number.

99881118866 is a deficient number, since it is larger than the sum of its proper divisors (57318291502).

99881118866 is a wasteful number, since it uses less digits than its factorization.

99881118866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11996497.

The product of its digits is 11943936, while the sum is 65.

The spelling of 99881118866 in words is "ninety-nine billion, eight hundred eighty-one million, one hundred eighteen thousand, eight hundred sixty-six".