63729313696 has 12 divisors (see below), whose sum is σ = 125467086402. Its totient is φ = 31864656832.

The previous prime is 63729313691. The next prime is 63729313717. The reversal of 63729313696 is 69631392736.

It can be written as a sum of positive squares in only one way, i.e., 59553569296 + 4175744400 = 244036^2 + 64620^2 .

It is a super-3 number, since 3×63729313696³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (63729313691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995770495 + ... + 995770558.

Almost surely, 2^63729313696 is an apocalyptic number.

It is an amenable number.

63729313696 is a deficient number, since it is larger than the sum of its proper divisors (61737772706).

63729313696 is a wasteful number, since it uses less digits than its factorization.

63729313696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991541063 (or 1991541055 counting only the distinct ones).

The product of its digits is 6613488, while the sum is 55.

The spelling of 63729313696 in words is "sixty-three billion, seven hundred twenty-nine million, three hundred thirteen thousand, six hundred ninety-six".