85461623077 has 2 divisors, whose sum is σ = 85461623078. Its totient is φ = 85461623076.

The previous prime is 85461623057. The next prime is 85461623131. The reversal of 85461623077 is 77032616458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84908714881 + 552908196 = 291391^2 + 23514^2 .

It is a cyclic number.

It is not a de Polignac number, because 85461623077 - 2⁷ = 85461622949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85461623077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85461623057) 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, 42730811538 + 42730811539.

It is an arithmetic number, because the mean of its divisors is an integer number (42730811539).

Almost surely, 2^85461623077 is an apocalyptic number.

It is an amenable number.

85461623077 is a deficient number, since it is larger than the sum of its proper divisors (1).

85461623077 is an equidigital number, since it uses as much as digits as its factorization.

85461623077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 85461623077 in words is "eighty-five billion, four hundred sixty-one million, six hundred twenty-three thousand, seventy-seven".