68247799857216 has 840 divisors, whose sum is σ = 236482994119680. Its totient is φ = 19404769370112.

The previous prime is 68247799857191. The next prime is 68247799857217. The reversal of 68247799857216 is 61275899774286.

68247799857216 is a `hidden beast` number, since 6 + 8 + 2 + 477 + 9 + 98 + 57 + 2 + 1 + 6 = 666.

It is a super-2 number, since 2×68247799857216² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (68247799857217) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 79082038801 + ... + 79082039663.

It is an arithmetic number, because the mean of its divisors is an integer number (281527373952).

Almost surely, 2^{68247799857216} 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 68247799857216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118241497059840).

68247799857216 is an abundant number, since it is smaller than the sum of its proper divisors (168235194262464).

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

68247799857216 is a wasteful number, since it uses less digits than its factorization.

68247799857216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053 (or 2027 counting only the distinct ones).

The product of its digits is 5120962560, while the sum is 81.

The spelling of 68247799857216 in words is "sixty-eight trillion, two hundred forty-seven billion, seven hundred ninety-nine million, eight hundred fifty-seven thousand, two hundred sixteen".