86550431508077 has 2 divisors, whose sum is σ = 86550431508078. Its totient is φ = 86550431508076.

The previous prime is 86550431508071. The next prime is 86550431508209. The reversal of 86550431508077 is 77080513405568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50643419383561 + 35907012124516 = 7116419^2 + 5992246^2 .

It is a cyclic number.

It is not a de Polignac number, because 86550431508077 - 2¹² = 86550431503981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86550431508071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43275215754038 + 43275215754039.

It is an arithmetic number, because the mean of its divisors is an integer number (43275215754039).

Almost surely, 2^{86550431508077} is an apocalyptic number.

It is an amenable number.

86550431508077 is a deficient number, since it is larger than the sum of its proper divisors (1).

86550431508077 is an equidigital number, since it uses as much as digits as its factorization.

86550431508077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224000, while the sum is 59.

The spelling of 86550431508077 in words is "eighty-six trillion, five hundred fifty billion, four hundred thirty-one million, five hundred eight thousand, seventy-seven".