63814323728 has 10 divisors (see below), whose sum is σ = 123640252254. Its totient is φ = 31907161856.

The previous prime is 63814323689. The next prime is 63814323739. The reversal of 63814323728 is 82732341836.

It can be written as a sum of positive squares in only one way, i.e., 37897187584 + 25917136144 = 194672^2 + 160988^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1994197601 + ... + 1994197632.

Almost surely, 2^63814323728 is an apocalyptic number.

It is an amenable number.

63814323728 is a deficient number, since it is larger than the sum of its proper divisors (59825928526).

63814323728 is a wasteful number, since it uses less digits than its factorization.

63814323728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988395241 (or 3988395235 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 47.

The spelling of 63814323728 in words is "sixty-three billion, eight hundred fourteen million, three hundred twenty-three thousand, seven hundred twenty-eight".