68647422240 has 336 divisors, whose sum is σ = 248831085888. Its totient is φ = 17878952448.

The previous prime is 68647422227. The next prime is 68647422247. The reversal of 68647422240 is 4222474686.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (68647422247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 5008677 + ... + 5022363.

It is an arithmetic number, because the mean of its divisors is an integer number (740568708).

Almost surely, 2^68647422240 is an apocalyptic number.

68647422240 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 68647422240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124415542944).

68647422240 is an abundant number, since it is smaller than the sum of its proper divisors (180183663648).

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

68647422240 is a wasteful number, since it uses less digits than its factorization.

68647422240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13763 (or 13740 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 45.

The spelling of 68647422240 in words is "sixty-eight billion, six hundred forty-seven million, four hundred twenty-two thousand, two hundred forty".