66444342113505 has 16 divisors (see below), whose sum is σ = 107406936532224. Its totient is φ = 35071652743680.

The previous prime is 66444342113483. The next prime is 66444342113531. The reversal of 66444342113505 is 50531124344466.

It is not a de Polignac number, because 66444342113505 - 2¹¹ = 66444342111457 is a prime.

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, 22833105801 + ... + 22833108710.

It is an arithmetic number, because the mean of its divisors is an integer number (6712933533264).

Almost surely, 2^{66444342113505} is an apocalyptic number.

It is an amenable number.

66444342113505 is a deficient number, since it is larger than the sum of its proper divisors (40962594418719).

66444342113505 is a wasteful number, since it uses less digits than its factorization.

66444342113505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45666214616.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 66444342113505 in words is "sixty-six trillion, four hundred forty-four billion, three hundred forty-two million, one hundred thirteen thousand, five hundred five".