63144643061664 has 36 divisors (see below), whose sum is σ = 179567578707426. Its totient is φ = 21048214353792.

The previous prime is 63144643061663. The next prime is 63144643061677. The reversal of 63144643061664 is 46616034644136.

63144643061664 is a `hidden beast` number, since 6 + 3 + 1 + 4 + 46 + 430 + 6 + 166 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 62212530050064 + 932113011600 = 7887492^2 + 965460^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 63144643061664.

It is not an unprimeable number, because it can be changed into a prime (63144643061663) 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 5 ways as a sum of consecutive naturals, for example, 109626116139 + ... + 109626116714.

Almost surely, 2^{63144643061664} is an apocalyptic number.

It is an amenable number.

63144643061664 is an abundant number, since it is smaller than the sum of its proper divisors (116422935645762).

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

63144643061664 is a wasteful number, since it uses less digits than its factorization.

63144643061664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219252232869 (or 219252232858 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 54.

The spelling of 63144643061664 in words is "sixty-three trillion, one hundred forty-four billion, six hundred forty-three million, sixty-one thousand, six hundred sixty-four".