67798890016 has 144 divisors (see below), whose sum is σ = 158032153440. Its totient is φ = 28382914560.

The previous prime is 67798890007. The next prime is 67798890041. The reversal of 67798890016 is 61009889776.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33847671 + ... + 33849673.

It is an arithmetic number, because the mean of its divisors is an integer number (1097445510).

Almost surely, 2^67798890016 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 67798890016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79016076720).

67798890016 is an abundant number, since it is smaller than the sum of its proper divisors (90233263424).

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

67798890016 is a wasteful number, since it uses less digits than its factorization.

67798890016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619 (or 2598 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 61.

The spelling of 67798890016 in words is "sixty-seven billion, seven hundred ninety-eight million, eight hundred ninety thousand, sixteen".