851489784032 has 24 divisors (see below), whose sum is σ = 1676439265536. Its totient is φ = 425727430912.

The previous prime is 851489784031. The next prime is 851489784037. The reversal of 851489784032 is 230487984158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851489784031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265313 + ... + 1331679.

It is an arithmetic number, because the mean of its divisors is an integer number (69851636064).

Almost surely, 2^851489784032 is an apocalyptic number.

It is an amenable number.

851489784032 is a deficient number, since it is larger than the sum of its proper divisors (824949481504).

851489784032 is a wasteful number, since it uses less digits than its factorization.

851489784032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091330 (or 1091322 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 851489784032 in words is "eight hundred fifty-one billion, four hundred eighty-nine million, seven hundred eighty-four thousand, thirty-two".