64242051361 has 2 divisors, whose sum is σ = 64242051362. Its totient is φ = 64242051360.

The previous prime is 64242051359. The next prime is 64242051397. The reversal of 64242051361 is 16315024246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64120368400 + 121682961 = 253220^2 + 11031^2 .

It is a cyclic number.

It is not a de Polignac number, because 64242051361 - 2¹ = 64242051359 is a prime.

Together with 64242051359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64242031361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32121025680 + 32121025681.

It is an arithmetic number, because the mean of its divisors is an integer number (32121025681).

Almost surely, 2^64242051361 is an apocalyptic number.

It is an amenable number.

64242051361 is a deficient number, since it is larger than the sum of its proper divisors (1).

64242051361 is an equidigital number, since it uses as much as digits as its factorization.

64242051361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 64242051361 in words is "sixty-four billion, two hundred forty-two million, fifty-one thousand, three hundred sixty-one".