64057705489 has 2 divisors, whose sum is σ = 64057705490. Its totient is φ = 64057705488.

The previous prime is 64057705471. The next prime is 64057705493. The reversal of 64057705489 is 98450775046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48973690000 + 15084015489 = 221300^2 + 122817^2 .

It is a cyclic number.

It is not a de Polignac number, because 64057705489 - 2¹¹ = 64057703441 is a prime.

It is not a weakly prime, because it can be changed into another prime (64057775489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32028852744 + 32028852745.

It is an arithmetic number, because the mean of its divisors is an integer number (32028852745).

Almost surely, 2^64057705489 is an apocalyptic number.

It is an amenable number.

64057705489 is a deficient number, since it is larger than the sum of its proper divisors (1).

64057705489 is an equidigital number, since it uses as much as digits as its factorization.

64057705489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 64057705489 in words is "sixty-four billion, fifty-seven million, seven hundred five thousand, four hundred eighty-nine".