6544413506245 has 8 divisors (see below), whose sum is σ = 7857276602616. Its totient is φ = 5232877208256.

The previous prime is 6544413506219. The next prime is 6544413506263. The reversal of 6544413506245 is 5426053144456.

It can be written as a sum of positive squares in 4 ways, for example, as 1247782829764 + 5296630676481 = 1117042^2 + 2301441^2 .

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 6544413506245 - 2⁷ = 6544413506117 is a prime.

It is a super-3 number, since 3×6544413506245³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331688742 + ... + 331708471.

It is an arithmetic number, because the mean of its divisors is an integer number (982159575327).

Almost surely, 2^{6544413506245} is an apocalyptic number.

It is an amenable number.

6544413506245 is a deficient number, since it is larger than the sum of its proper divisors (1312863096371).

6544413506245 is a wasteful number, since it uses less digits than its factorization.

6544413506245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663399191.

The product of its (nonzero) digits is 6912000, while the sum is 49.

The spelling of 6544413506245 in words is "six trillion, five hundred forty-four billion, four hundred thirteen million, five hundred six thousand, two hundred forty-five".