86728305541 has 2 divisors, whose sum is σ = 86728305542. Its totient is φ = 86728305540.

The previous prime is 86728305523. The next prime is 86728305551. The reversal of 86728305541 is 14550382768.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71489390625 + 15238914916 = 267375^2 + 123446^2 .

It is a cyclic number.

It is not a de Polignac number, because 86728305541 - 2¹³ = 86728297349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86728305551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43364152770 + 43364152771.

It is an arithmetic number, because the mean of its divisors is an integer number (43364152771).

Almost surely, 2^86728305541 is an apocalyptic number.

It is an amenable number.

86728305541 is a deficient number, since it is larger than the sum of its proper divisors (1).

86728305541 is an equidigital number, since it uses as much as digits as its factorization.

86728305541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 86728305541 in words is "eighty-six billion, seven hundred twenty-eight million, three hundred five thousand, five hundred forty-one".