99999999802 has 8 divisors (see below), whose sum is σ = 150777202356. Its totient is φ = 49740932352.

The previous prime is 99999999769. The next prime is 99999999821. The reversal of 99999999802 is 20899999999.

It is a happy number.

99999999802 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 99332759241 + 667240561 = 315171^2 + 25831^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129533293 + ... + 129534064.

Almost surely, 2^99999999802 is an apocalyptic number.

99999999802 is a deficient number, since it is larger than the sum of its proper divisors (50777202554).

99999999802 is a wasteful number, since it uses less digits than its factorization.

99999999802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259067552.

The product of its (nonzero) digits is 688747536, while the sum is 82.

The spelling of 99999999802 in words is "ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred two".