86125671977 has 2 divisors, whose sum is σ = 86125671978. Its totient is φ = 86125671976.

The previous prime is 86125671971. The next prime is 86125672007. The reversal of 86125671977 is 77917652168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53063886736 + 33061785241 = 230356^2 + 181829^2 .

It is a cyclic number.

It is not a de Polignac number, because 86125671977 - 2²⁶ = 86058563113 is a prime.

It is not a weakly prime, because it can be changed into another prime (86125671971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43062835988 + 43062835989.

It is an arithmetic number, because the mean of its divisors is an integer number (43062835989).

Almost surely, 2^86125671977 is an apocalyptic number.

It is an amenable number.

86125671977 is a deficient number, since it is larger than the sum of its proper divisors (1).

86125671977 is an equidigital number, since it uses as much as digits as its factorization.

86125671977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8890560, while the sum is 59.

The spelling of 86125671977 in words is "eighty-six billion, one hundred twenty-five million, six hundred seventy-one thousand, nine hundred seventy-seven".