63709668312 has 64 divisors (see below), whose sum is σ = 164165564160. Its totient is φ = 20594179200.

The previous prime is 63709668311. The next prime is 63709668331. The reversal of 63709668312 is 21386690736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63709668311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202518 + ... + 410405.

It is an arithmetic number, because the mean of its divisors is an integer number (2565086940).

Almost surely, 2^63709668312 is an apocalyptic number.

It is an amenable number.

63709668312 is an abundant number, since it is smaller than the sum of its proper divisors (100455895848).

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

63709668312 is a wasteful number, since it uses less digits than its factorization.

63709668312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613064 (or 613060 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 63709668312 in words is "sixty-three billion, seven hundred nine million, six hundred sixty-eight thousand, three hundred twelve".