66671004434 has 8 divisors (see below), whose sum is σ = 100386760320. Its totient is φ = 33208750996.

The previous prime is 66671004397. The next prime is 66671004479. The reversal of 66671004434 is 43440017666.

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

It is a junction number, because it is equal to n+sod(n) for n = 66671004391 and 66671004400.

It is an unprimeable number.

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, 63374954 + ... + 63376005.

It is an arithmetic number, because the mean of its divisors is an integer number (12548345040).

Almost surely, 2^66671004434 is an apocalyptic number.

66671004434 is a deficient number, since it is larger than the sum of its proper divisors (33715755886).

66671004434 is a wasteful number, since it uses less digits than its factorization.

66671004434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126751224.

The product of its (nonzero) digits is 290304, while the sum is 41.

It can be divided in two parts, 6667 and 1004434, that added together give a palindrome (1011101).

The spelling of 66671004434 in words is "sixty-six billion, six hundred seventy-one million, four thousand, four hundred thirty-four".