66031367219 has 2 divisors, whose sum is σ = 66031367220. Its totient is φ = 66031367218.

The previous prime is 66031367179. The next prime is 66031367243. The reversal of 66031367219 is 91276313066.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66031367219 is a prime.

It is a super-2 number, since 2×66031367219² (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 66031367219.

It is not a weakly prime, because it can be changed into another prime (66031367419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33015683609 + 33015683610.

It is an arithmetic number, because the mean of its divisors is an integer number (33015683610).

Almost surely, 2^66031367219 is an apocalyptic number.

66031367219 is a deficient number, since it is larger than the sum of its proper divisors (1).

66031367219 is an equidigital number, since it uses as much as digits as its factorization.

66031367219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 66031367219 in words is "sixty-six billion, thirty-one million, three hundred sixty-seven thousand, two hundred nineteen".