85647928213 has 2 divisors, whose sum is σ = 85647928214. Its totient is φ = 85647928212.

The previous prime is 85647928207. The next prime is 85647928231. The reversal of 85647928213 is 31282974658.

Together with next prime (85647928231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85508286724 + 139641489 = 292418^2 + 11817^2 .

It is a cyclic number.

It is not a de Polignac number, because 85647928213 - 2²⁵ = 85614373781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85647928253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42823964106 + 42823964107.

It is an arithmetic number, because the mean of its divisors is an integer number (42823964107).

Almost surely, 2^85647928213 is an apocalyptic number.

It is an amenable number.

85647928213 is a deficient number, since it is larger than the sum of its proper divisors (1).

85647928213 is an equidigital number, since it uses as much as digits as its factorization.

85647928213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 55.

The spelling of 85647928213 in words is "eighty-five billion, six hundred forty-seven million, nine hundred twenty-eight thousand, two hundred thirteen".