64854248321168 has 20 divisors (see below), whose sum is σ = 125851135948908. Its totient is φ = 32376535818240.

The previous prime is 64854248321167. The next prime is 64854248321179. The reversal of 64854248321168 is 86112384245846.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59010174148864 + 5844074172304 = 7681808^2 + 2417452^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64854248321168.

It is not an unprimeable number, because it can be changed into a prime (64854248321167) 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, 3161760821 + ... + 3161781332.

Almost surely, 2^{64854248321168} is an apocalyptic number.

It is an amenable number.

64854248321168 is a deficient number, since it is larger than the sum of its proper divisors (60996887627740).

64854248321168 is a wasteful number, since it uses less digits than its factorization.

64854248321168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6323542802 (or 6323542796 counting only the distinct ones).

The product of its digits is 70778880, while the sum is 62.

The spelling of 64854248321168 in words is "sixty-four trillion, eight hundred fifty-four billion, two hundred forty-eight million, three hundred twenty-one thousand, one hundred sixty-eight".