851346521701 has 12 divisors (see below), whose sum is σ = 930723120012. Its totient is φ = 774129045888.

The previous prime is 851346521699. The next prime is 851346521791. The reversal of 851346521701 is 107125643158.

It can be written as a sum of positive squares in 2 ways, for example, as 134708084676 + 716638437025 = 367026^2 + 846545^2 .

It is not a de Polignac number, because 851346521701 - 2¹ = 851346521699 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 (851346521791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7235940 + ... + 7352653.

It is an arithmetic number, because the mean of its divisors is an integer number (77560260001).

Almost surely, 2^851346521701 is an apocalyptic number.

It is an amenable number.

851346521701 is a deficient number, since it is larger than the sum of its proper divisors (79376598311).

851346521701 is a wasteful number, since it uses less digits than its factorization.

851346521701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14588740 (or 14588673 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 851346521701 in words is "eight hundred fifty-one billion, three hundred forty-six million, five hundred twenty-one thousand, seven hundred one".