64854238128289 has 16 divisors (see below), whose sum is σ = 68821882635456. Its totient is φ = 60903706752000.

The previous prime is 64854238128247. The next prime is 64854238128293. The reversal of 64854238128289 is 98282183245846.

It is a cyclic number.

It is not a de Polignac number, because 64854238128289 - 2⁷ = 64854238128161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64854238198289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11755209 + ... + 16367449.

It is an arithmetic number, because the mean of its divisors is an integer number (4301367664716).

Almost surely, 2^{64854238128289} is an apocalyptic number.

It is an amenable number.

64854238128289 is a deficient number, since it is larger than the sum of its proper divisors (3967644507167).

64854238128289 is a wasteful number, since it uses less digits than its factorization.

64854238128289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4614096.

The product of its digits is 424673280, while the sum is 70.

The spelling of 64854238128289 in words is "sixty-four trillion, eight hundred fifty-four billion, two hundred thirty-eight million, one hundred twenty-eight thousand, two hundred eighty-nine".