68455286512 has 20 divisors (see below), whose sum is σ = 133182465856. Its totient is φ = 34085617920.

The previous prime is 68455286483. The next prime is 68455286513. The reversal of 68455286512 is 21568255486.

It is a super-2 number, since 2×68455286512² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68455286512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68455286513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8872608 + ... + 8880319.

Almost surely, 2^68455286512 is an apocalyptic number.

It is an amenable number.

68455286512 is a deficient number, since it is larger than the sum of its proper divisors (64727179344).

68455286512 is a wasteful number, since it uses less digits than its factorization.

68455286512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17753176 (or 17753170 counting only the distinct ones).

The product of its digits is 4608000, while the sum is 52.

The spelling of 68455286512 in words is "sixty-eight billion, four hundred fifty-five million, two hundred eighty-six thousand, five hundred twelve".