851601932873 has 2 divisors, whose sum is σ = 851601932874. Its totient is φ = 851601932872.

The previous prime is 851601932851. The next prime is 851601932917. The reversal of 851601932873 is 378239106158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 851353145344 + 248787529 = 922688^2 + 15773^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-851601932873 is a prime.

It is not a weakly prime, because it can be changed into another prime (851601932473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425800966436 + 425800966437.

It is an arithmetic number, because the mean of its divisors is an integer number (425800966437).

Almost surely, 2^851601932873 is an apocalyptic number.

It is an amenable number.

851601932873 is a deficient number, since it is larger than the sum of its proper divisors (1).

851601932873 is an equidigital number, since it uses as much as digits as its factorization.

851601932873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 851601932873 in words is "eight hundred fifty-one billion, six hundred one million, nine hundred thirty-two thousand, eight hundred seventy-three".