68199999120 has 240 divisors, whose sum is σ = 250261607232. Its totient is φ = 16506762240.

The previous prime is 68199999089. The next prime is 68199999121. The reversal of 68199999120 is 2199999186.

It is a tau number, because it is divible by the number of its divisors (240).

It is not an unprimeable number, because it can be changed into a prime (68199999121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5165167 + ... + 5178353.

Almost surely, 2^68199999120 is an apocalyptic number.

68199999120 is a gapful number since it is divisible by the number (60) 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 68199999120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125130803616).

68199999120 is an abundant number, since it is smaller than the sum of its proper divisors (182061608112).

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

68199999120 is a wasteful number, since it uses less digits than its factorization.

68199999120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13870 (or 13861 counting only the distinct ones).

The product of its (nonzero) digits is 5668704, while the sum is 63.

The spelling of 68199999120 in words is "sixty-eight billion, one hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred twenty".