68203465818 has 64 divisors (see below), whose sum is σ = 140913302400. Its totient is φ = 21991018752.

The previous prime is 68203465789. The next prime is 68203465849. The reversal of 68203465818 is 81856430286.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34993108 + ... + 34995056.

It is an arithmetic number, because the mean of its divisors is an integer number (2201770350).

Almost surely, 2^68203465818 is an apocalyptic number.

68203465818 is an abundant number, since it is smaller than the sum of its proper divisors (72709836582).

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

68203465818 is a wasteful number, since it uses less digits than its factorization.

68203465818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831.

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 68203465818 in words is "sixty-eight billion, two hundred three million, four hundred sixty-five thousand, eight hundred eighteen".