68993809985280 has 576 divisors, whose sum is σ = 241363761408000. Its totient is φ = 16736067403776.

The previous prime is 68993809985201. The next prime is 68993809985281. The reversal of 68993809985280 is 8258990839986.

It is a junction number, because it is equal to n+sod(n) for n = 68993809985193 and 68993809985202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68993809985281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 184913151 + ... + 185285889.

It is an arithmetic number, because the mean of its divisors is an integer number (419034308000).

Almost surely, 2^{68993809985280} is an apocalyptic number.

68993809985280 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 68993809985280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120681880704000).

68993809985280 is an abundant number, since it is smaller than the sum of its proper divisors (172369951422720).

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

68993809985280 is a wasteful number, since it uses less digits than its factorization.

68993809985280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372884 (or 372870 counting only the distinct ones).

The product of its (nonzero) digits is 4837294080, while the sum is 84.

The spelling of 68993809985280 in words is "sixty-eight trillion, nine hundred ninety-three billion, eight hundred nine million, nine hundred eighty-five thousand, two hundred eighty".