99217257216 has 864 divisors, whose sum is σ = 370842167808. Its totient is φ = 23162388480.

The previous prime is 99217257197. The next prime is 99217257263. The reversal of 99217257216 is 61275271299.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 161854926 + ... + 161855538.

It is an arithmetic number, because the mean of its divisors is an integer number (429215472).

Almost surely, 2^99217257216 is an apocalyptic number.

99217257216 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99217257216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185421083904).

99217257216 is an abundant number, since it is smaller than the sum of its proper divisors (271624910592).

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

99217257216 is a wasteful number, since it uses less digits than its factorization.

99217257216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 676 counting only the distinct ones).

The product of its digits is 952560, while the sum is 51.

The spelling of 99217257216 in words is "ninety-nine billion, two hundred seventeen million, two hundred fifty-seven thousand, two hundred sixteen".