42666020445 has 16 divisors (see below), whose sum is σ = 69930649152. Its totient is φ = 22200205440.

The previous prime is 42666020417. The next prime is 42666020461. The reversal of 42666020445 is 54402066624.

It is not a de Polignac number, because 42666020445 - 2⁵ = 42666020413 is a prime.

It is a super-2 number, since 2×42666020445² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34687207 + ... + 34688436.

It is an arithmetic number, because the mean of its divisors is an integer number (4370665572).

Almost surely, 2^42666020445 is an apocalyptic number.

It is an amenable number.

42666020445 is a deficient number, since it is larger than the sum of its proper divisors (27264628707).

42666020445 is a wasteful number, since it uses less digits than its factorization.

42666020445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69375692.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 42666020445 in words is "forty-two billion, six hundred sixty-six million, twenty thousand, four hundred forty-five".