67782827749687 has 32 divisors (see below), whose sum is σ = 68862436227200. Its totient is φ = 66713124759552.

The previous prime is 67782827749657. The next prime is 67782827749711. The reversal of 67782827749687 is 78694772828776.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67782827749687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67782827749598 and 67782827749607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67782827749657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27409148683 + ... + 27409151155.

It is an arithmetic number, because the mean of its divisors is an integer number (2151951132100).

Almost surely, 2^{67782827749687} is an apocalyptic number.

67782827749687 is a deficient number, since it is larger than the sum of its proper divisors (1079608477513).

67782827749687 is a wasteful number, since it uses less digits than its factorization.

67782827749687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4907.

The product of its digits is 44609273856, while the sum is 88.

The spelling of 67782827749687 in words is "sixty-seven trillion, seven hundred eighty-two billion, eight hundred twenty-seven million, seven hundred forty-nine thousand, six hundred eighty-seven".