64663655463 has 192 divisors, whose sum is σ = 117530569728. Its totient is φ = 33764290560.

The previous prime is 64663655449. The next prime is 64663655533. The reversal of 64663655463 is 36455636646.

It is a happy number.

64663655463 is a `hidden beast` number, since 6 + 4 + 66 + 36 + 5 + 546 + 3 = 666.

It is not a de Polignac number, because 64663655463 - 2¹³ = 64663647271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64663655863) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 88217445 + ... + 88218177.

It is an arithmetic number, because the mean of its divisors is an integer number (612138384).

Almost surely, 2^64663655463 is an apocalyptic number.

64663655463 is a deficient number, since it is larger than the sum of its proper divisors (52866914265).

64663655463 is a wasteful number, since it uses less digits than its factorization.

64663655463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886 (or 883 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 54.

The spelling of 64663655463 in words is "sixty-four billion, six hundred sixty-three million, six hundred fifty-five thousand, four hundred sixty-three".