64105304617 has 2 divisors, whose sum is σ = 64105304618. Its totient is φ = 64105304616.

The previous prime is 64105304609. The next prime is 64105304623. The reversal of 64105304617 is 71640350146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46112838121 + 17992466496 = 214739^2 + 134136^2 .

It is a cyclic number.

It is not a de Polignac number, because 64105304617 - 2³ = 64105304609 is a prime.

It is not a weakly prime, because it can be changed into another prime (64105304647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32052652308 + 32052652309.

It is an arithmetic number, because the mean of its divisors is an integer number (32052652309).

Almost surely, 2^64105304617 is an apocalyptic number.

It is an amenable number.

64105304617 is a deficient number, since it is larger than the sum of its proper divisors (1).

64105304617 is an equidigital number, since it uses as much as digits as its factorization.

64105304617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 64105304617 in words is "sixty-four billion, one hundred five million, three hundred four thousand, six hundred seventeen".