67374786512 has 320 divisors, whose sum is σ = 165321990144. Its totient is φ = 26207723520.

The previous prime is 67374786499. The next prime is 67374786527. The reversal of 67374786512 is 21568747376.

It is a happy number.

It is a super-2 number, since 2×67374786512² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 119670743 + ... + 119671305.

Almost surely, 2^67374786512 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 67374786512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82660995072).

67374786512 is an abundant number, since it is smaller than the sum of its proper divisors (97947203632).

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

67374786512 is a wasteful number, since it uses less digits than its factorization.

67374786512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706 (or 700 counting only the distinct ones).

The product of its digits is 11854080, while the sum is 56.

The spelling of 67374786512 in words is "sixty-seven billion, three hundred seventy-four million, seven hundred eighty-six thousand, five hundred twelve".