67921518060 has 432 divisors, whose sum is σ = 247249766400. Its totient is φ = 15596634240.

The previous prime is 67921518023. The next prime is 67921518073. The reversal of 67921518060 is 6081512976.

67921518060 is a `hidden beast` number, since 6 + 79 + 2 + 1 + 518 + 0 + 60 = 666.

It is a super-2 number, since 2×67921518060² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 67921517997 and 67921518015.

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 143 ways as a sum of consecutive naturals, for example, 11170101 + ... + 11176179.

Almost surely, 2^67921518060 is an apocalyptic number.

67921518060 is a gapful number since it is divisible by the number (60) 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 67921518060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123624883200).

67921518060 is an abundant number, since it is smaller than the sum of its proper divisors (179328248340).

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

67921518060 is a wasteful number, since it uses less digits than its factorization.

67921518060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144 (or 6119 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 67921518060 in words is "sixty-seven billion, nine hundred twenty-one million, five hundred eighteen thousand, sixty".