68778388592 has 20 divisors (see below), whose sum is σ = 133845175176. Its totient is φ = 34237698240.

The previous prime is 68778388529. The next prime is 68778388603. The reversal of 68778388592 is 29588387786.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9464759 + ... + 9472022.

Almost surely, 2^68778388592 is an apocalyptic number.

It is an amenable number.

68778388592 is a deficient number, since it is larger than the sum of its proper divisors (65066786584).

68778388592 is a wasteful number, since it uses less digits than its factorization.

68778388592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18937016 (or 18937010 counting only the distinct ones).

The product of its digits is 325140480, while the sum is 71.

The spelling of 68778388592 in words is "sixty-eight billion, seven hundred seventy-eight million, three hundred eighty-eight thousand, five hundred ninety-two".