666034362221750 has 64 divisors (see below), whose sum is σ = 1256014616478336. Its totient is φ = 264448600000000.

The previous prime is 666034362221707. The next prime is 666034362221831. The reversal of 666034362221750 is 57122263430666.

It is a junction number, because it is equal to n+sod(n) for n = 666034362221692 and 666034362221701.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 444536375 + ... + 446032125.

It is an arithmetic number, because the mean of its divisors is an integer number (19625228382474).

Almost surely, 2^{666034362221750} is an apocalyptic number.

666034362221750 is a deficient number, since it is larger than the sum of its proper divisors (589980254256586).

666034362221750 is a wasteful number, since it uses less digits than its factorization.

666034362221750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508906 (or 1508896 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 53.

The spelling of 666034362221750 in words is "six hundred sixty-six trillion, thirty-four billion, three hundred sixty-two million, two hundred twenty-one thousand, seven hundred fifty".