67001619689 has 2 divisors, whose sum is σ = 67001619690. Its totient is φ = 67001619688.

The previous prime is 67001619683. The next prime is 67001619791. The reversal of 67001619689 is 98691610076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66839312089 + 162307600 = 258533^2 + 12740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67001619689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67001619689.

It is not a weakly prime, because it can be changed into another prime (67001619683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33500809844 + 33500809845.

It is an arithmetic number, because the mean of its divisors is an integer number (33500809845).

Almost surely, 2^67001619689 is an apocalyptic number.

It is an amenable number.

67001619689 is a deficient number, since it is larger than the sum of its proper divisors (1).

67001619689 is an equidigital number, since it uses as much as digits as its factorization.

67001619689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 67001619689 in words is "sixty-seven billion, one million, six hundred nineteen thousand, six hundred eighty-nine".