68389554048816 has 1280 divisors, whose sum is σ = 260933571182592. Its totient is φ = 14838747955200.

The previous prime is 68389554048797. The next prime is 68389554048821. The reversal of 68389554048816 is 61884045598386.

It is a super-2 number, since 2×68389554048816² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 3975434871 + ... + 3975452073.

Almost surely, 2^{68389554048816} is an apocalyptic number.

68389554048816 is a gapful number since it is divisible by the number (66) 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 68389554048816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130466785591296).

68389554048816 is an abundant number, since it is smaller than the sum of its proper divisors (192544017133776).

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

68389554048816 is a wasteful number, since it uses less digits than its factorization.

68389554048816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17450 (or 17444 counting only the distinct ones).

The product of its (nonzero) digits is 1592524800, while the sum is 75.

The spelling of 68389554048816 in words is "sixty-eight trillion, three hundred eighty-nine billion, five hundred fifty-four million, forty-eight thousand, eight hundred sixteen".