64057705529 has 2 divisors, whose sum is σ = 64057705530. Its totient is φ = 64057705528.

The previous prime is 64057705493. The next prime is 64057705573. The reversal of 64057705529 is 92550775046.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63692131129 + 365574400 = 252373^2 + 19120^2 .

It is a cyclic number.

It is not a de Polignac number, because 64057705529 - 2⁸ = 64057705273 is a prime.

It is not a weakly prime, because it can be changed into another prime (64057702529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32028852764 + 32028852765.

It is an arithmetic number, because the mean of its divisors is an integer number (32028852765).

Almost surely, 2^64057705529 is an apocalyptic number.

It is an amenable number.

64057705529 is a deficient number, since it is larger than the sum of its proper divisors (1).

64057705529 is an equidigital number, since it uses as much as digits as its factorization.

64057705529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646000, while the sum is 50.

The spelling of 64057705529 in words is "sixty-four billion, fifty-seven million, seven hundred five thousand, five hundred twenty-nine".