67868730818 has 32 divisors (see below), whose sum is σ = 119232691200. Its totient is φ = 28365603840.

The previous prime is 67868730817. The next prime is 67868730821. The reversal of 67868730818 is 81803786876.

It is a super-2 number, since 2×67868730818² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67868730817) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1465583 + ... + 1511181.

It is an arithmetic number, because the mean of its divisors is an integer number (3726021600).

Almost surely, 2^67868730818 is an apocalyptic number.

67868730818 is a deficient number, since it is larger than the sum of its proper divisors (51363960382).

67868730818 is a wasteful number, since it uses less digits than its factorization.

67868730818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48242.

The product of its (nonzero) digits is 21676032, while the sum is 62.

The spelling of 67868730818 in words is "sixty-seven billion, eight hundred sixty-eight million, seven hundred thirty thousand, eight hundred eighteen".