99278655930 has 48 divisors (see below), whose sum is σ = 258140113920. Its totient is φ = 26472707424.

The previous prime is 99278655919. The next prime is 99278655943. The reversal of 99278655930 is 3955687299.

99278655930 is a `hidden beast` number, since 9 + 9 + 2 + 78 + 6 + 559 + 3 + 0 = 666.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2710519 + ... + 2746901.

It is an arithmetic number, because the mean of its divisors is an integer number (5377919040).

Almost surely, 2^99278655930 is an apocalyptic number.

99278655930 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99278655930 is an abundant number, since it is smaller than the sum of its proper divisors (158861457990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99278655930 is a wasteful number, since it uses less digits than its factorization.

99278655930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66715 (or 66712 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 63.

The spelling of 99278655930 in words is "ninety-nine billion, two hundred seventy-eight million, six hundred fifty-five thousand, nine hundred thirty".