268166031778 has 8 divisors (see below), whose sum is σ = 419738136768. Its totient is φ = 128253319524.

The previous prime is 268166031677. The next prime is 268166031779. The reversal of 268166031778 is 877130661862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (268166031779) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2914848126 + ... + 2914848217.

It is an arithmetic number, because the mean of its divisors is an integer number (52467267096).

Almost surely, 2^268166031778 is an apocalyptic number.

268166031778 is a deficient number, since it is larger than the sum of its proper divisors (151572104990).

268166031778 is a wasteful number, since it uses less digits than its factorization.

268166031778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5829696368.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 268166031778 in words is "two hundred sixty-eight billion, one hundred sixty-six million, thirty-one thousand, seven hundred seventy-eight".