851803280252 has 24 divisors (see below), whose sum is σ = 1506110914560. Its totient is φ = 421486387200.

The previous prime is 851803280203. The next prime is 851803280297. The reversal of 851803280252 is 252082308158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7892252 + ... + 7999452.

It is an arithmetic number, because the mean of its divisors is an integer number (62754621440).

Almost surely, 2^851803280252 is an apocalyptic number.

It is an amenable number.

851803280252 is a deficient number, since it is larger than the sum of its proper divisors (654307634308).

851803280252 is a wasteful number, since it uses less digits than its factorization.

851803280252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127781 (or 127779 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 851803280252 in words is "eight hundred fifty-one billion, eight hundred three million, two hundred eighty thousand, two hundred fifty-two".