63647505705705 has 32 divisors (see below), whose sum is σ = 107989984080000. Its totient is φ = 31900071447552.

The previous prime is 63647505705649. The next prime is 63647505705853. The reversal of 63647505705705 is 50750750574636.

It is not a de Polignac number, because 63647505705705 - 2⁹ = 63647505705193 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189208330 + ... + 189544419.

It is an arithmetic number, because the mean of its divisors is an integer number (3374687002500).

Almost surely, 2^{63647505705705} is an apocalyptic number.

It is an amenable number.

63647505705705 is a deficient number, since it is larger than the sum of its proper divisors (44342478374295).

63647505705705 is a wasteful number, since it uses less digits than its factorization.

63647505705705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378753433.

The product of its (nonzero) digits is 92610000, while the sum is 60.

The spelling of 63647505705705 in words is "sixty-three trillion, six hundred forty-seven billion, five hundred five million, seven hundred five thousand, seven hundred five".