67994036637696 has 1664 divisors, whose sum is σ = 231050679552000. Its totient is φ = 19612473753600.

The previous prime is 67994036637689. The next prime is 67994036637817. The reversal of 67994036637696 is 69673663049976.

67994036637696 is a `hidden beast` number, since 6 + 7 + 99 + 40 + 36 + 6 + 376 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (1664).

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 127 ways as a sum of consecutive naturals, for example, 322246619031 + ... + 322246619241.

Almost surely, 2^{67994036637696} 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 67994036637696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115525339776000).

67994036637696 is an abundant number, since it is smaller than the sum of its proper divisors (163056642914304).

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

67994036637696 is a wasteful number, since it uses less digits than its factorization.

67994036637696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 9999593856, while the sum is 81.

The spelling of 67994036637696 in words is "sixty-seven trillion, nine hundred ninety-four billion, thirty-six million, six hundred thirty-seven thousand, six hundred ninety-six".