68766558336 has 512 divisors, whose sum is σ = 247306752000. Its totient is φ = 18603426816.

The previous prime is 68766558331. The next prime is 68766558337. The reversal of 68766558336 is 63385566786.

68766558336 is a `hidden beast` number, since 6 + 8 + 76 + 6 + 558 + 3 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (68766558331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37230565 + ... + 37232411.

It is an arithmetic number, because the mean of its divisors is an integer number (483021000).

Almost surely, 2^68766558336 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 68766558336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123653376000).

68766558336 is an abundant number, since it is smaller than the sum of its proper divisors (178540193664).

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

68766558336 is an equidigital number, since it uses as much as digits as its factorization.

68766558336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908 (or 1878 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 63.

The spelling of 68766558336 in words is "sixty-eight billion, seven hundred sixty-six million, five hundred fifty-eight thousand, three hundred thirty-six".