86709032777 has 2 divisors, whose sum is σ = 86709032778. Its totient is φ = 86709032776.

The previous prime is 86709032771. The next prime is 86709032791. The reversal of 86709032777 is 77723090768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86285537536 + 423495241 = 293744^2 + 20579^2 .

It is a cyclic number.

It is not a de Polignac number, because 86709032777 - 2²⁶ = 86641923913 is a prime.

It is not a weakly prime, because it can be changed into another prime (86709032771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43354516388 + 43354516389.

It is an arithmetic number, because the mean of its divisors is an integer number (43354516389).

Almost surely, 2^86709032777 is an apocalyptic number.

It is an amenable number.

86709032777 is a deficient number, since it is larger than the sum of its proper divisors (1).

86709032777 is an equidigital number, since it uses as much as digits as its factorization.

86709032777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6223392, while the sum is 56.

The spelling of 86709032777 in words is "eighty-six billion, seven hundred nine million, thirty-two thousand, seven hundred seventy-seven".