42666361564 has 12 divisors (see below), whose sum is σ = 77074717888. Its totient is φ = 20645013600.

The previous prime is 42666361561. The next prime is 42666361597. The reversal of 42666361564 is 46516366624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42666361561) 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 3 ways as a sum of consecutive naturals, for example, 172041657 + ... + 172041904.

Almost surely, 2^42666361564 is an apocalyptic number.

It is an amenable number.

42666361564 is a deficient number, since it is larger than the sum of its proper divisors (34408356324).

42666361564 is a wasteful number, since it uses less digits than its factorization.

42666361564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344083596 (or 344083594 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 49.

The spelling of 42666361564 in words is "forty-two billion, six hundred sixty-six million, three hundred sixty-one thousand, five hundred sixty-four".