850373500666 has 4 divisors (see below), whose sum is σ = 1275560251002. Its totient is φ = 425186750332.

The previous prime is 850373500661. The next prime is 850373500681. The reversal of 850373500666 is 666005373058.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 842487172641 + 7886328025 = 917871^2 + 88805^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (850373500661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212593375165 + ... + 212593375168.

Almost surely, 2^850373500666 is an apocalyptic number.

850373500666 is a deficient number, since it is larger than the sum of its proper divisors (425186750336).

850373500666 is a wasteful number, since it uses less digits than its factorization.

850373500666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425186750335.

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 850373500666 in words is "eight hundred fifty billion, three hundred seventy-three million, five hundred thousand, six hundred sixty-six".