64539000769 has 2 divisors, whose sum is σ = 64539000770. Its totient is φ = 64539000768.

The previous prime is 64539000749. The next prime is 64539000793. The reversal of 64539000769 is 96700093546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44548434225 + 19990566544 = 211065^2 + 141388^2 .

It is a cyclic number.

It is not a de Polignac number, because 64539000769 - 2⁵ = 64539000737 is a prime.

It is a super-3 number, since 3×64539000769³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (64539000749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32269500384 + 32269500385.

It is an arithmetic number, because the mean of its divisors is an integer number (32269500385).

Almost surely, 2^64539000769 is an apocalyptic number.

It is an amenable number.

64539000769 is a deficient number, since it is larger than the sum of its proper divisors (1).

64539000769 is an equidigital number, since it uses as much as digits as its factorization.

64539000769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 64539000769 in words is "sixty-four billion, five hundred thirty-nine million, seven hundred sixty-nine", and thus it is an aban number.