544664513546453 has 4 divisors (see below), whose sum is σ = 544677584804460. Its totient is φ = 544651442288448.

The previous prime is 544664513546389. The next prime is 544664513546473. The reversal of 544664513546453 is 354645315466445.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61931894781124 + 482732618765329 = 7869682^2 + 21971177^2 .

It is a cyclic number.

It is not a de Polignac number, because 544664513546453 - 2⁶ = 544664513546389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 544664513546453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544664513546473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6535566500 + ... + 6535649837.

It is an arithmetic number, because the mean of its divisors is an integer number (136169396201115).

Almost surely, 2^{544664513546453} is an apocalyptic number.

It is an amenable number.

544664513546453 is a deficient number, since it is larger than the sum of its proper divisors (13071258007).

544664513546453 is a wasteful number, since it uses less digits than its factorization.

544664513546453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13071258006.

The product of its digits is 1244160000, while the sum is 65.

The spelling of 544664513546453 in words is "five hundred forty-four trillion, six hundred sixty-four billion, five hundred thirteen million, five hundred forty-six thousand, four hundred fifty-three".