851071463 has 4 divisors (see below), whose sum is σ = 928441608. Its totient is φ = 773701320.

The previous prime is 851071421. The next prime is 851071469. The reversal of 851071463 is 364170158.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-851071463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851071469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38685056 + ... + 38685077.

It is an arithmetic number, because the mean of its divisors is an integer number (232110402).

Almost surely, 2^851071463 is an apocalyptic number.

851071463 is a deficient number, since it is larger than the sum of its proper divisors (77370145).

851071463 is a wasteful number, since it uses less digits than its factorization.

851071463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77370144.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 851071463 is about 29173.1291259611. The cubic root of 851071463 is about 947.6660947141. Note that the first 3 decimals are identical.

The spelling of 851071463 in words is "eight hundred fifty-one million, seventy-one thousand, four hundred sixty-three".