63729313695 has 36 divisors (see below), whose sum is σ = 116584070616. Its totient is φ = 32200066080.

The previous prime is 63729313691. The next prime is 63729313717. The reversal of 63729313695 is 59631392736.

It is not a de Polignac number, because 63729313695 - 2² = 63729313691 is a prime.

It is a super-2 number, since 2×63729313695² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 in 35 ways as a sum of consecutive naturals, for example, 1945261 + ... + 1977750.

It is an arithmetic number, because the mean of its divisors is an integer number (3238446406).

Almost surely, 2^63729313695 is an apocalyptic number.

63729313695 is a deficient number, since it is larger than the sum of its proper divisors (52854756921).

63729313695 is a wasteful number, since it uses less digits than its factorization.

63729313695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3923060 (or 3923038 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 54.

The spelling of 63729313695 in words is "sixty-three billion, seven hundred twenty-nine million, three hundred thirteen thousand, six hundred ninety-five".