666484862042 has 8 divisors (see below), whose sum is σ = 999733286100. Its totient is φ = 333240433344.

The previous prime is 666484862003. The next prime is 666484862101. The reversal of 666484862042 is 240268484666.

It can be written as a sum of positive squares in 2 ways, for example, as 572535868921 + 93948993121 = 756661^2 + 306511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×666484862042² (a number of 24 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 539567 + ... + 1274402.

Almost surely, 2^666484862042 is an apocalyptic number.

666484862042 is a deficient number, since it is larger than the sum of its proper divisors (333248424058).

666484862042 is a wasteful number, since it uses less digits than its factorization.

666484862042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997680.

The product of its (nonzero) digits is 21233664, while the sum is 56.

The spelling of 666484862042 in words is "six hundred sixty-six billion, four hundred eighty-four million, eight hundred sixty-two thousand, forty-two".