64504618793 has 2 divisors, whose sum is σ = 64504618794. Its totient is φ = 64504618792.

The previous prime is 64504618751. The next prime is 64504618807. The reversal of 64504618793 is 39781640546.

64504618793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57172635664 + 7331983129 = 239108^2 + 85627^2 .

It is a cyclic number.

It is not a de Polignac number, because 64504618793 - 2¹⁰ = 64504617769 is a prime.

It is not a weakly prime, because it can be changed into another prime (64504612793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32252309396 + 32252309397.

It is an arithmetic number, because the mean of its divisors is an integer number (32252309397).

Almost surely, 2^64504618793 is an apocalyptic number.

It is an amenable number.

64504618793 is a deficient number, since it is larger than the sum of its proper divisors (1).

64504618793 is an equidigital number, since it uses as much as digits as its factorization.

64504618793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 64504618793 in words is "sixty-four billion, five hundred four million, six hundred eighteen thousand, seven hundred ninety-three".