64555534835712 has 224 divisors, whose sum is σ = 193625321724960. Its totient is φ = 21518505639936.

The previous prime is 64555534835689. The next prime is 64555534835747. The reversal of 64555534835712 is 21753843555546.

It is a happy number.

64555534835712 is a `hidden beast` number, since 6 + 4 + 5 + 5 + 5 + 53 + 4 + 8 + 3 + 571 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 64555534835712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16114278 + ... + 19717530.

Almost surely, 2^{64555534835712} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64555534835712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96812660862480).

64555534835712 is an abundant number, since it is smaller than the sum of its proper divisors (129069786889248).

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

64555534835712 is an frugal number, since it uses more digits than its factorization.

64555534835712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3603300 (or 3603258 counting only the distinct ones).

The product of its digits is 302400000, while the sum is 63.

The spelling of 64555534835712 in words is "sixty-four trillion, five hundred fifty-five billion, five hundred thirty-four million, eight hundred thirty-five thousand, seven hundred twelve".