85828894997761 has 2 divisors, whose sum is σ = 85828894997762. Its totient is φ = 85828894997760.

The previous prime is 85828894997731. The next prime is 85828894997771. The reversal of 85828894997761 is 16779949882858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82627100103025 + 3201794894736 = 9089945^2 + 1789356^2 .

It is a cyclic number.

It is not a de Polignac number, because 85828894997761 - 2⁹ = 85828894997249 is a prime.

It is not a weakly prime, because it can be changed into another prime (85828894997701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42914447498880 + 42914447498881.

It is an arithmetic number, because the mean of its divisors is an integer number (42914447498881).

Almost surely, 2^{85828894997761} is an apocalyptic number.

It is an amenable number.

85828894997761 is a deficient number, since it is larger than the sum of its proper divisors (1).

85828894997761 is an equidigital number, since it uses as much as digits as its factorization.

85828894997761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35115171840, while the sum is 91.

The spelling of 85828894997761 in words is "eighty-five trillion, eight hundred twenty-eight billion, eight hundred ninety-four million, nine hundred ninety-seven thousand, seven hundred sixty-one".