9855998016 has 56 divisors (see below), whose sum is σ = 26466576480. Its totient is φ = 3236293632.

The previous prime is 9855998011. The next prime is 9855998027. The reversal of 9855998016 is 6108995589.

It is not an unprimeable number, because it can be changed into a prime (9855998011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370221 + ... + 395948.

Almost surely, 2^9855998016 is an apocalyptic number.

9855998016 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

9855998016 is an abundant number, since it is smaller than the sum of its proper divisors (16610578464).

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

9855998016 is a wasteful number, since it uses less digits than its factorization.

9855998016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766251 (or 766241 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 60.

The square root of 9855998016 is about 99277.3791757216. The cubic root of 9855998016 is about 2144.0432205218.

The spelling of 9855998016 in words is "nine billion, eight hundred fifty-five million, nine hundred ninety-eight thousand, sixteen".