67036921344 has 120 divisors (see below), whose sum is σ = 194951743272. Its totient is φ = 22174863360.

The previous prime is 67036921309. The next prime is 67036921363. The reversal of 67036921344 is 44312963076.

67036921344 is a `hidden beast` number, since 6 + 70 + 369 + 213 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 67036921344.

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 11 ways as a sum of consecutive naturals, for example, 548122 + ... + 659174.

Almost surely, 2^67036921344 is an apocalyptic number.

67036921344 is a gapful number since it is divisible by the number (64) 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 67036921344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97475871636).

67036921344 is an abundant number, since it is smaller than the sum of its proper divisors (127914821928).

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

67036921344 is a wasteful number, since it uses less digits than its factorization.

67036921344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111208 (or 111189 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 67036921344 in words is "sixty-seven billion, thirty-six million, nine hundred twenty-one thousand, three hundred forty-four".