851468388437 has 2 divisors, whose sum is σ = 851468388438. Its totient is φ = 851468388436.

The previous prime is 851468388427. The next prime is 851468388467. The reversal of 851468388437 is 734883864158.

851468388437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 605220205681 + 246248182756 = 777959^2 + 496234^2 .

It is a cyclic number.

It is not a de Polignac number, because 851468388437 - 2³² = 847173421141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (851468388427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425734194218 + 425734194219.

It is an arithmetic number, because the mean of its divisors is an integer number (425734194219).

Almost surely, 2^851468388437 is an apocalyptic number.

It is an amenable number.

851468388437 is a deficient number, since it is larger than the sum of its proper divisors (1).

851468388437 is an equidigital number, since it uses as much as digits as its factorization.

851468388437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123863040, while the sum is 65.

The spelling of 851468388437 in words is "eight hundred fifty-one billion, four hundred sixty-eight million, three hundred eighty-eight thousand, four hundred thirty-seven".