64335665655 has 12 divisors (see below), whose sum is σ = 111515153880. Its totient is φ = 34312354992.

The previous prime is 64335665629. The next prime is 64335665671. The reversal of 64335665655 is 55656653346.

64335665655 is a `hidden beast` number, since 6 + 43 + 35 + 6 + 6 + 565 + 5 = 666.

It is not a de Polignac number, because 64335665655 - 2⁹ = 64335665143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 714840685 + ... + 714840774.

It is an arithmetic number, because the mean of its divisors is an integer number (9292929490).

Almost surely, 2^64335665655 is an apocalyptic number.

64335665655 is a deficient number, since it is larger than the sum of its proper divisors (47179488225).

64335665655 is a wasteful number, since it uses less digits than its factorization.

64335665655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429681470 (or 1429681467 counting only the distinct ones).

The product of its digits is 29160000, while the sum is 54.

The spelling of 64335665655 in words is "sixty-four billion, three hundred thirty-five million, six hundred sixty-five thousand, six hundred fifty-five".