64814881676360 has 16 divisors (see below), whose sum is σ = 145833483771900. Its totient is φ = 25925952670528.

The previous prime is 64814881676297. The next prime is 64814881676381. The reversal of 64814881676360 is 6367618841846.

It can be written as a sum of positive squares in 2 ways, for example, as 63122421181444 + 1692460494916 = 7944962^2 + 1300946^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810186020915 + ... + 810186020994.

Almost surely, 2^{64814881676360} is an apocalyptic number.

It is an amenable number.

64814881676360 is an abundant number, since it is smaller than the sum of its proper divisors (81018602095540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64814881676360 is a wasteful number, since it uses less digits than its factorization.

64814881676360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620372041920 (or 1620372041916 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 68.

The spelling of 64814881676360 in words is "sixty-four trillion, eight hundred fourteen billion, eight hundred eighty-one million, six hundred seventy-six thousand, three hundred sixty".