85454342773 has 2 divisors, whose sum is σ = 85454342774. Its totient is φ = 85454342772.

The previous prime is 85454342711. The next prime is 85454342837. The reversal of 85454342773 is 37724345458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42763344849 + 42690997924 = 206793^2 + 206618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85454342773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85454342773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85454342273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42727171386 + 42727171387.

It is an arithmetic number, because the mean of its divisors is an integer number (42727171387).

Almost surely, 2^85454342773 is an apocalyptic number.

It is an amenable number.

85454342773 is a deficient number, since it is larger than the sum of its proper divisors (1).

85454342773 is an equidigital number, since it uses as much as digits as its factorization.

85454342773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11289600, while the sum is 52.

The spelling of 85454342773 in words is "eighty-five billion, four hundred fifty-four million, three hundred forty-two thousand, seven hundred seventy-three".