63971701700 has 18 divisors (see below), whose sum is σ = 138818592906. Its totient is φ = 25588680640.

The previous prime is 63971701691. The next prime is 63971701733. The reversal of 63971701700 is 710717936.

It can be written as a sum of positive squares in 3 ways, for example, as 2738219584 + 61233482116 = 52328^2 + 247454^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 319858409 + ... + 319858608.

Almost surely, 2^63971701700 is an apocalyptic number.

It is an amenable number.

63971701700 is an abundant number, since it is smaller than the sum of its proper divisors (74846891206).

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

63971701700 is a wasteful number, since it uses less digits than its factorization.

63971701700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639717031 (or 639717024 counting only the distinct ones).

The product of its (nonzero) digits is 55566, while the sum is 41.

The spelling of 63971701700 in words is "sixty-three billion, nine hundred seventy-one million, seven hundred one thousand, seven hundred".