85736306077 has 2 divisors, whose sum is σ = 85736306078. Its totient is φ = 85736306076.

The previous prime is 85736306027. The next prime is 85736306081. The reversal of 85736306077 is 77060363758.

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., 85369736761 + 366569316 = 292181^2 + 19146^2 .

It is a cyclic number.

It is not a de Polignac number, because 85736306077 - 2¹¹ = 85736304029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85736306027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42868153038 + 42868153039.

It is an arithmetic number, because the mean of its divisors is an integer number (42868153039).

Almost surely, 2^85736306077 is an apocalyptic number.

It is an amenable number.

85736306077 is a deficient number, since it is larger than the sum of its proper divisors (1).

85736306077 is an equidigital number, since it uses as much as digits as its factorization.

85736306077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4445280, while the sum is 52.

The spelling of 85736306077 in words is "eighty-five billion, seven hundred thirty-six million, three hundred six thousand, seventy-seven".