64134550069 has 2 divisors, whose sum is σ = 64134550070. Its totient is φ = 64134550068.

The previous prime is 64134550057. The next prime is 64134550121. The reversal of 64134550069 is 96005543146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37757541969 + 26377008100 = 194313^2 + 162410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64134550069 is a prime.

It is a super-2 number, since 2×64134550069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64134550019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32067275034 + 32067275035.

It is an arithmetic number, because the mean of its divisors is an integer number (32067275035).

Almost surely, 2^64134550069 is an apocalyptic number.

It is an amenable number.

64134550069 is a deficient number, since it is larger than the sum of its proper divisors (1).

64134550069 is an equidigital number, since it uses as much as digits as its factorization.

64134550069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 64134550069 in words is "sixty-four billion, one hundred thirty-four million, five hundred fifty thousand, sixty-nine".