851751011 has 4 divisors (see below), whose sum is σ = 854989872. Its totient is φ = 848512152.

The previous prime is 851751007. The next prime is 851751013. The reversal of 851751011 is 110157158.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 851751011 - 2² = 851751007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (851751013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1619036 + ... + 1619561.

It is an arithmetic number, because the mean of its divisors is an integer number (213747468).

Almost surely, 2^851751011 is an apocalyptic number.

851751011 is a deficient number, since it is larger than the sum of its proper divisors (3238861).

851751011 is a wasteful number, since it uses less digits than its factorization.

851751011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238860.

The product of its (nonzero) digits is 1400, while the sum is 29.

The square root of 851751011 is about 29184.7736157058. The cubic root of 851751011 is about 947.9182526524.

The spelling of 851751011 in words is "eight hundred fifty-one million, seven hundred fifty-one thousand, eleven".