851512612 has 6 divisors (see below), whose sum is σ = 1490147078. Its totient is φ = 425756304.

The previous prime is 851512591. The next prime is 851512621. The reversal of 851512612 is 216215158.

It can be written as a sum of positive squares in only one way, i.e., 470716416 + 380796196 = 21696^2 + 19514^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106439073 + ... + 106439080.

Almost surely, 2^851512612 is an apocalyptic number.

It is an amenable number.

851512612 is a deficient number, since it is larger than the sum of its proper divisors (638634466).

851512612 is a wasteful number, since it uses less digits than its factorization.

851512612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212878157 (or 212878155 counting only the distinct ones).

The product of its digits is 4800, while the sum is 31.

The square root of 851512612 is about 29180.6890254497. The cubic root of 851512612 is about 947.8298058929.

The spelling of 851512612 in words is "eight hundred fifty-one million, five hundred twelve thousand, six hundred twelve".