68285335977784 has 32 divisors (see below), whose sum is σ = 133682082693120. Its totient is φ = 32638565890656.

The previous prime is 68285335977773. The next prime is 68285335977809. The reversal of 68285335977784 is 48777953358286.

It is a junction number, because it is equal to n+sod(n) for n = 68285335977698 and 68285335977707.

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, 111274272 + ... + 111886255.

It is an arithmetic number, because the mean of its divisors is an integer number (4177565084160).

Almost surely, 2^{68285335977784} is an apocalyptic number.

It is an amenable number.

68285335977784 is a deficient number, since it is larger than the sum of its proper divisors (65396746715336).

68285335977784 is a wasteful number, since it uses less digits than its factorization.

68285335977784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223162219 (or 223162215 counting only the distinct ones).

The product of its digits is 17069875200, while the sum is 82.

The spelling of 68285335977784 in words is "sixty-eight trillion, two hundred eighty-five billion, three hundred thirty-five million, nine hundred seventy-seven thousand, seven hundred eighty-four".