444166442523 has 6 divisors (see below), whose sum is σ = 641573750324. Its totient is φ = 296110961676.

The previous prime is 444166442521. The next prime is 444166442537. The reversal of 444166442523 is 325244661444.

444166442523 is a `hidden beast` number, since 4 + 44 + 166 + 4 + 425 + 23 = 666.

It is not a de Polignac number, because 444166442523 - 2¹ = 444166442521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444166442521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24675913465 + ... + 24675913482.

Almost surely, 2^444166442523 is an apocalyptic number.

444166442523 is a deficient number, since it is larger than the sum of its proper divisors (197407307801).

444166442523 is a wasteful number, since it uses less digits than its factorization.

444166442523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49351826953 (or 49351826950 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 45.

The spelling of 444166442523 in words is "four hundred forty-four billion, one hundred sixty-six million, four hundred forty-two thousand, five hundred twenty-three".