86142655565977 has 2 divisors, whose sum is σ = 86142655565978. Its totient is φ = 86142655565976.

The previous prime is 86142655565971. The next prime is 86142655566007. The reversal of 86142655565977 is 77956555624168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78090165354496 + 8052490211481 = 8836864^2 + 2837691^2 .

It is a cyclic number.

It is not a de Polignac number, because 86142655565977 - 2³ = 86142655565969 is a prime.

It is not a weakly prime, because it can be changed into another prime (86142655565971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43071327782988 + 43071327782989.

It is an arithmetic number, because the mean of its divisors is an integer number (43071327782989).

Almost surely, 2^{86142655565977} is an apocalyptic number.

It is an amenable number.

86142655565977 is a deficient number, since it is larger than the sum of its proper divisors (1).

86142655565977 is an equidigital number, since it uses as much as digits as its factorization.

86142655565977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240000, while the sum is 76.

The spelling of 86142655565977 in words is "eighty-six trillion, one hundred forty-two billion, six hundred fifty-five million, five hundred sixty-five thousand, nine hundred seventy-seven".