67583217979 has 2 divisors, whose sum is σ = 67583217980. Its totient is φ = 67583217978.

The previous prime is 67583217959. The next prime is 67583218013. The reversal of 67583217979 is 97971238576.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67583217979 - 2¹³ = 67583209787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67583217979.

It is not a weakly prime, because it can be changed into another prime (67583217959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33791608989 + 33791608990.

It is an arithmetic number, because the mean of its divisors is an integer number (33791608990).

Almost surely, 2^67583217979 is an apocalyptic number.

67583217979 is a deficient number, since it is larger than the sum of its proper divisors (1).

67583217979 is an equidigital number, since it uses as much as digits as its factorization.

67583217979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40007520, while the sum is 64.

The spelling of 67583217979 in words is "sixty-seven billion, five hundred eighty-three million, two hundred seventeen thousand, nine hundred seventy-nine".