64311530219 has 2 divisors, whose sum is σ = 64311530220. Its totient is φ = 64311530218.

The previous prime is 64311530191. The next prime is 64311530243. The reversal of 64311530219 is 91203511346.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64311530219 - 2²⁰ = 64310481643 is a prime.

It is a super-2 number, since 2×64311530219² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64311530819) 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, 32155765109 + 32155765110.

It is an arithmetic number, because the mean of its divisors is an integer number (32155765110).

Almost surely, 2^64311530219 is an apocalyptic number.

64311530219 is a deficient number, since it is larger than the sum of its proper divisors (1).

64311530219 is an equidigital number, since it uses as much as digits as its factorization.

64311530219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 64311530219 in words is "sixty-four billion, three hundred eleven million, five hundred thirty thousand, two hundred nineteen".