268684505290 has 16 divisors (see below), whose sum is σ = 488327568768. Its totient is φ = 106430366736.

The previous prime is 268684505267. The next prime is 268684505311. The reversal of 268684505290 is 92505486862.

268684505290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 130428342 + ... + 130430401.

It is an arithmetic number, because the mean of its divisors is an integer number (30520473048).

Almost surely, 2^268684505290 is an apocalyptic number.

268684505290 is a deficient number, since it is larger than the sum of its proper divisors (219643063478).

268684505290 is a wasteful number, since it uses less digits than its factorization.

268684505290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260858853.

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 268684505290 in words is "two hundred sixty-eight billion, six hundred eighty-four million, five hundred five thousand, two hundred ninety".