99478310085 has 320 divisors, whose sum is σ = 227487744000. Its totient is φ = 40394764800.

The previous prime is 99478310081. The next prime is 99478310143. The reversal of 99478310085 is 58001387499.

99478310085 is a `hidden beast` number, since 99 + 478 + 3 + 1 + 0 + 0 + 85 = 666.

It is not a de Polignac number, because 99478310085 - 2² = 99478310081 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99478310081) 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 319 ways as a sum of consecutive naturals, for example, 367078500 + ... + 367078770.

It is an arithmetic number, because the mean of its divisors is an integer number (710899200).

Almost surely, 2^99478310085 is an apocalyptic number.

It is an amenable number.

99478310085 is an abundant number, since it is smaller than the sum of its proper divisors (128009433915).

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

99478310085 is a wasteful number, since it uses less digits than its factorization.

99478310085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 99478310085 in words is "ninety-nine billion, four hundred seventy-eight million, three hundred ten thousand, eighty-five".