68815189190000 has 200 divisors, whose sum is σ = 181903647100032. Its totient is φ = 25003195360000.

The previous prime is 68815189189997. The next prime is 68815189190021. The reversal of 68815189190000 is 9198151886.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×68815189190000² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 134274239 + ... + 134785761.

Almost surely, 2^{68815189190000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68815189190000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90951823550016).

68815189190000 is an abundant number, since it is smaller than the sum of its proper divisors (113088457910032).

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

68815189190000 is a wasteful number, since it uses less digits than its factorization.

68815189190000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512785 (or 512764 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 56.

The spelling of 68815189190000 in words is "sixty-eight trillion, eight hundred fifteen billion, one hundred eighty-nine million, one hundred ninety thousand".