66224460422045 has 4 divisors (see below), whose sum is σ = 79469352506460. Its totient is φ = 52979568337632.

The previous prime is 66224460422027. The next prime is 66224460422059. The reversal of 66224460422045 is 54022406442266.

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 51110116949956 + 15114343472089 = 7149134^2 + 3887717^2 .

It is a cyclic number.

It is not a de Polignac number, because 66224460422045 - 2¹⁸ = 66224460159901 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6622446042200 + ... + 6622446042209.

It is an arithmetic number, because the mean of its divisors is an integer number (19867338126615).

Almost surely, 2^{66224460422045} is an apocalyptic number.

It is an amenable number.

66224460422045 is a deficient number, since it is larger than the sum of its proper divisors (13244892084415).

66224460422045 is a wasteful number, since it uses less digits than its factorization.

66224460422045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13244892084414.

The product of its (nonzero) digits is 4423680, while the sum is 47.

The spelling of 66224460422045 in words is "sixty-six trillion, two hundred twenty-four billion, four hundred sixty million, four hundred twenty-two thousand, forty-five".