64229077609 has 2 divisors, whose sum is σ = 64229077610. Its totient is φ = 64229077608.

The previous prime is 64229077579. The next prime is 64229077631. The reversal of 64229077609 is 90677092246.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63897728400 + 331349209 = 252780^2 + 18203^2 .

It is a cyclic number.

It is not a de Polignac number, because 64229077609 - 2²⁵ = 64195523177 is a prime.

It is not a weakly prime, because it can be changed into another prime (64229077009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32114538804 + 32114538805.

It is an arithmetic number, because the mean of its divisors is an integer number (32114538805).

Almost surely, 2^64229077609 is an apocalyptic number.

It is an amenable number.

64229077609 is a deficient number, since it is larger than the sum of its proper divisors (1).

64229077609 is an equidigital number, since it uses as much as digits as its factorization.

64229077609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 64229077609 in words is "sixty-four billion, two hundred twenty-nine million, seventy-seven thousand, six hundred nine".