67754921472 has 400 divisors, whose sum is σ = 244733844960. Its totient is φ = 18218483712.

The previous prime is 67754921467. The next prime is 67754921497. The reversal of 67754921472 is 27412945776.

67754921472 is a `hidden beast` number, since 6 + 7 + 7 + 5 + 492 + 147 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4928304 + ... + 4942032.

Almost surely, 2^67754921472 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 67754921472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122366922480).

67754921472 is an abundant number, since it is smaller than the sum of its proper divisors (176978923488).

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

67754921472 is a wasteful number, since it uses less digits than its factorization.

67754921472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13783 (or 13758 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 54.

The spelling of 67754921472 in words is "sixty-seven billion, seven hundred fifty-four million, nine hundred twenty-one thousand, four hundred seventy-two".