64655344764 has 36 divisors (see below), whose sum is σ = 163442127576. Its totient is φ = 21550755168.

The previous prime is 64655344729. The next prime is 64655344807. The reversal of 64655344764 is 46744355646.

It is a happy number.

64655344764 is a `hidden beast` number, since 6 + 4 + 6 + 5 + 534 + 47 + 64 = 666.

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 64655344764.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1308207 + ... + 1356729.

Almost surely, 2^64655344764 is an apocalyptic number.

It is an amenable number.

64655344764 is an abundant number, since it is smaller than the sum of its proper divisors (98786782812).

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

64655344764 is a wasteful number, since it uses less digits than its factorization.

64655344764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85546 (or 85541 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 54.

The spelling of 64655344764 in words is "sixty-four billion, six hundred fifty-five million, three hundred forty-four thousand, seven hundred sixty-four".