63554311664 has 40 divisors (see below), whose sum is σ = 126027707520. Its totient is φ = 31031356608.

The previous prime is 63554311661. The next prime is 63554311673. The reversal of 63554311664 is 46611345536.

63554311664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63554311661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4786667 + ... + 4799925.

It is an arithmetic number, because the mean of its divisors is an integer number (3150692688).

Almost surely, 2^63554311664 is an apocalyptic number.

It is an amenable number.

63554311664 is a deficient number, since it is larger than the sum of its proper divisors (62473395856).

63554311664 is a wasteful number, since it uses less digits than its factorization.

63554311664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20277 (or 20271 counting only the distinct ones).

The product of its digits is 777600, while the sum is 44.

The spelling of 63554311664 in words is "sixty-three billion, five hundred fifty-four million, three hundred eleven thousand, six hundred sixty-four".