850666428250 has 32 divisors (see below), whose sum is σ = 1592507517120. Its totient is φ = 340253758800.

The previous prime is 850666428211. The next prime is 850666428259. The reversal of 850666428250 is 52824666058.

It is a happy number.

It is a super-2 number, since 2×850666428250² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (850666428259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9349477 + ... + 9440023.

It is an arithmetic number, because the mean of its divisors is an integer number (49765859910).

Almost surely, 2^850666428250 is an apocalyptic number.

850666428250 is a deficient number, since it is larger than the sum of its proper divisors (741841088870).

850666428250 is a wasteful number, since it uses less digits than its factorization.

850666428250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128143 (or 128133 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 52.

The spelling of 850666428250 in words is "eight hundred fifty billion, six hundred sixty-six million, four hundred twenty-eight thousand, two hundred fifty".