64486395585493 has 4 divisors (see below), whose sum is σ = 73698737812000. Its totient is φ = 55274053358988.

The previous prime is 64486395585473. The next prime is 64486395585559. The reversal of 64486395585493 is 39458559368446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64486395585493 - 2¹⁷ = 64486395454421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64486395585473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4606171113243 + ... + 4606171113256.

It is an arithmetic number, because the mean of its divisors is an integer number (18424684453000).

Almost surely, 2^{64486395585493} is an apocalyptic number.

It is an amenable number.

64486395585493 is a deficient number, since it is larger than the sum of its proper divisors (9212342226507).

64486395585493 is an equidigital number, since it uses as much as digits as its factorization.

64486395585493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9212342226506.

The product of its digits is 13436928000, while the sum is 79.

The spelling of 64486395585493 in words is "sixty-four trillion, four hundred eighty-six billion, three hundred ninety-five million, five hundred eighty-five thousand, four hundred ninety-three".