42021666265466 has 16 divisors (see below), whose sum is σ = 67182282187200. Its totient is φ = 19643942155200.

The previous prime is 42021666265463. The next prime is 42021666265489. The reversal of 42021666265466 is 66456266612024.

It is not an unprimeable number, because it can be changed into a prime (42021666265463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4092482816 + ... + 4092493083.

It is an arithmetic number, because the mean of its divisors is an integer number (4198892636700).

Almost surely, 2^{42021666265466} is an apocalyptic number.

42021666265466 is a deficient number, since it is larger than the sum of its proper divisors (25160615921734).

42021666265466 is a wasteful number, since it uses less digits than its factorization.

42021666265466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8184976069.

The product of its (nonzero) digits is 29859840, while the sum is 56.

The spelling of 42021666265466 in words is "forty-two trillion, twenty-one billion, six hundred sixty-six million, two hundred sixty-five thousand, four hundred sixty-six".