85029836777 has 2 divisors, whose sum is σ = 85029836778. Its totient is φ = 85029836776.

The previous prime is 85029836741. The next prime is 85029836783. The reversal of 85029836777 is 77763892058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84195146896 + 834689881 = 290164^2 + 28891^2 .

It is a cyclic number.

It is not a de Polignac number, because 85029836777 - 2¹⁶ = 85029771241 is a prime.

It is not a weakly prime, because it can be changed into another prime (85029236777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42514918388 + 42514918389.

It is an arithmetic number, because the mean of its divisors is an integer number (42514918389).

Almost surely, 2^85029836777 is an apocalyptic number.

It is an amenable number.

85029836777 is a deficient number, since it is larger than the sum of its proper divisors (1).

85029836777 is an equidigital number, since it uses as much as digits as its factorization.

85029836777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35562240, while the sum is 62.

The spelling of 85029836777 in words is "eighty-five billion, twenty-nine million, eight hundred thirty-six thousand, seven hundred seventy-seven".