67242756378 has 32 divisors (see below), whose sum is σ = 157851725184. Its totient is φ = 18692966592.

The previous prime is 67242756367. The next prime is 67242756391. The reversal of 67242756378 is 87365724276.

It is a super-2 number, since 2×67242756378² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21633825 + ... + 21636932.

It is an arithmetic number, because the mean of its divisors is an integer number (4932866412).

Almost surely, 2^67242756378 is an apocalyptic number.

67242756378 is an abundant number, since it is smaller than the sum of its proper divisors (90608968806).

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

67242756378 is a wasteful number, since it uses less digits than its factorization.

67242756378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43270806.

The product of its digits is 23708160, while the sum is 57.

The spelling of 67242756378 in words is "sixty-seven billion, two hundred forty-two million, seven hundred fifty-six thousand, three hundred seventy-eight".