42666626664 has 64 divisors (see below), whose sum is σ = 121721630400. Its totient is φ = 13837822272.

The previous prime is 42666626659. The next prime is 42666626677. The reversal of 42666626664 is 46662666624.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 42666626664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2661342 + ... + 2677325.

It is an arithmetic number, because the mean of its divisors is an integer number (1901900475).

Almost surely, 2^42666626664 is an apocalyptic number.

It is an amenable number.

42666626664 is an abundant number, since it is smaller than the sum of its proper divisors (79055003736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42666626664 is a wasteful number, since it uses less digits than its factorization.

42666626664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5338719 (or 5338709 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 54.

The spelling of 42666626664 in words is "forty-two billion, six hundred sixty-six million, six hundred twenty-six thousand, six hundred sixty-four".