728840851237 has 2 divisors, whose sum is σ = 728840851238. Its totient is φ = 728840851236.

The previous prime is 728840851159. The next prime is 728840851247. The reversal of 728840851237 is 732158048827.

728840851237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 624899736036 + 103941115201 = 790506^2 + 322399^2 .

It is a cyclic number.

It is not a de Polignac number, because 728840851237 - 2¹⁵ = 728840818469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728840851247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364420425618 + 364420425619.

It is an arithmetic number, because the mean of its divisors is an integer number (364420425619).

Almost surely, 2^728840851237 is an apocalyptic number.

It is an amenable number.

728840851237 is a deficient number, since it is larger than the sum of its proper divisors (1).

728840851237 is an equidigital number, since it uses as much as digits as its factorization.

728840851237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 728840851237 in words is "seven hundred twenty-eight billion, eight hundred forty million, eight hundred fifty-one thousand, two hundred thirty-seven".