68214574478 has 16 divisors (see below), whose sum is σ = 107757611520. Its totient is φ = 32297050296.

The previous prime is 68214574451. The next prime is 68214574501. The reversal of 68214574478 is 87447541286.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 337400 + ... + 500267.

It is an arithmetic number, because the mean of its divisors is an integer number (6734850720).

Almost surely, 2^68214574478 is an apocalyptic number.

68214574478 is a deficient number, since it is larger than the sum of its proper divisors (39543037042).

68214574478 is a wasteful number, since it uses less digits than its factorization.

68214574478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839831.

The product of its digits is 12042240, while the sum is 56.

The spelling of 68214574478 in words is "sixty-eight billion, two hundred fourteen million, five hundred seventy-four thousand, four hundred seventy-eight".