64055555663 has 4 divisors (see below), whose sum is σ = 69878788008. Its totient is φ = 58232323320.

The previous prime is 64055555659. The next prime is 64055555677. The reversal of 64055555663 is 36655555046.

64055555663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64055555663 - 2² = 64055555659 is a prime.

It is a super-2 number, since 2×64055555663² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64055555693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2911616156 + ... + 2911616177.

It is an arithmetic number, because the mean of its divisors is an integer number (17469697002).

Almost surely, 2^64055555663 is an apocalyptic number.

64055555663 is a deficient number, since it is larger than the sum of its proper divisors (5823232345).

64055555663 is a wasteful number, since it uses less digits than its factorization.

64055555663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5823232344.

The product of its (nonzero) digits is 8100000, while the sum is 50.

The spelling of 64055555663 in words is "sixty-four billion, fifty-five million, five hundred fifty-five thousand, six hundred sixty-three".