63429759681 has 16 divisors (see below), whose sum is σ = 85601911680. Its totient is φ = 41772931200.

The previous prime is 63429759671. The next prime is 63429759703. The reversal of 63429759681 is 18695792436.

It is not a de Polignac number, because 63429759681 - 2¹⁹ = 63429235393 is a prime.

It is a super-2 number, since 2×63429759681² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63429759671) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 183156 + ... + 400506.

It is an arithmetic number, because the mean of its divisors is an integer number (5350119480).

Almost surely, 2^63429759681 is an apocalyptic number.

It is an amenable number.

63429759681 is a deficient number, since it is larger than the sum of its proper divisors (22172151999).

63429759681 is a wasteful number, since it uses less digits than its factorization.

63429759681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218536.

The product of its digits is 19595520, while the sum is 60.

The spelling of 63429759681 in words is "sixty-three billion, four hundred twenty-nine million, seven hundred fifty-nine thousand, six hundred eighty-one".