666035000621642 has 8 divisors (see below), whose sum is σ = 999182197502496. Its totient is φ = 332974268120812.

The previous prime is 666035000621629. The next prime is 666035000621659. The reversal of 666035000621642 is 246126000530666.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21616075748 + ... + 21616106559.

It is an arithmetic number, because the mean of its divisors is an integer number (124897774687812).

Almost surely, 2^{666035000621642} is an apocalyptic number.

666035000621642 is a deficient number, since it is larger than the sum of its proper divisors (333147196880854).

666035000621642 is a wasteful number, since it uses less digits than its factorization.

666035000621642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43232190012.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 666035000621642 in words is "six hundred sixty-six trillion, thirty-five billion, six hundred twenty-one thousand, six hundred forty-two".