68339699918 has 16 divisors (see below), whose sum is σ = 117174457824. Its totient is φ = 29283271200.

The previous prime is 68339699893. The next prime is 68339699951. The reversal of 68339699918 is 81999693386.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348305 + ... + 507932.

It is an arithmetic number, because the mean of its divisors is an integer number (7323403614).

Almost surely, 2^68339699918 is an apocalyptic number.

68339699918 is a deficient number, since it is larger than the sum of its proper divisors (48834757906).

68339699918 is a wasteful number, since it uses less digits than its factorization.

68339699918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861947.

The product of its digits is 136048896, while the sum is 71.

The spelling of 68339699918 in words is "sixty-eight billion, three hundred thirty-nine million, six hundred ninety-nine thousand, nine hundred eighteen".