68679905918976 has 540 divisors, whose sum is σ = 225115463827072. Its totient is φ = 20140572672000.

The previous prime is 68679905918903. The next prime is 68679905918999. The reversal of 68679905918976 is 67981950997686.

68679905918976 is a `hidden beast` number, since 6 + 8 + 6 + 7 + 9 + 9 + 0 + 591 + 8 + 9 + 7 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 553045371 + ... + 553169541.

Almost surely, 2^{68679905918976} is an apocalyptic number.

68679905918976 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 68679905918976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112557731913536).

68679905918976 is an abundant number, since it is smaller than the sum of its proper divisors (156435557908096).

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

68679905918976 is a wasteful number, since it uses less digits than its factorization.

68679905918976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124258 (or 124218 counting only the distinct ones).

The product of its (nonzero) digits is 22221319680, while the sum is 90.

The spelling of 68679905918976 in words is "sixty-eight trillion, six hundred seventy-nine billion, nine hundred five million, nine hundred eighteen thousand, nine hundred seventy-six".