64539000793 has 2 divisors, whose sum is σ = 64539000794. Its totient is φ = 64539000792.

The previous prime is 64539000769. The next prime is 64539000797. The reversal of 64539000793 is 39700093546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57375579024 + 7163421769 = 239532^2 + 84637^2 .

It is a cyclic number.

It is not a de Polignac number, because 64539000793 - 2¹³ = 64538992601 is a prime.

It is not a weakly prime, because it can be changed into another prime (64539000797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32269500396 + 32269500397.

It is an arithmetic number, because the mean of its divisors is an integer number (32269500397).

Almost surely, 2^64539000793 is an apocalyptic number.

It is an amenable number.

64539000793 is a deficient number, since it is larger than the sum of its proper divisors (1).

64539000793 is an equidigital number, since it uses as much as digits as its factorization.

64539000793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 46.

The spelling of 64539000793 in words is "sixty-four billion, five hundred thirty-nine million, seven hundred ninety-three", and thus it is an aban number.