64554755745545 has 8 divisors (see below), whose sum is σ = 83424607425096. Its totient is φ = 47671204242816.

The previous prime is 64554755745511. The next prime is 64554755745547. The reversal of 64554755745545 is 54554755745546.

64554755745545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10475145860089 + 54079609885456 = 3236533^2 + 7353884^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64554755745545 - 2²⁰ = 64554754696969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64554755745547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496575044132 + ... + 496575044261.

It is an arithmetic number, because the mean of its divisors is an integer number (10428075928137).

Almost surely, 2^{64554755745545} is an apocalyptic number.

64554755745545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64554755745545 is a deficient number, since it is larger than the sum of its proper divisors (18869851679551).

64554755745545 is a wasteful number, since it uses less digits than its factorization.

64554755745545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993150088411.

The product of its digits is 5880000000, while the sum is 71.

Subtracting from 64554755745545 its reverse (54554755745546), we obtain a palindrome (9999999999999).

The spelling of 64554755745545 in words is "sixty-four trillion, five hundred fifty-four billion, seven hundred fifty-five million, seven hundred forty-five thousand, five hundred forty-five".