86207808977 has 2 divisors, whose sum is σ = 86207808978. Its totient is φ = 86207808976.

The previous prime is 86207808959. The next prime is 86207809019. The reversal of 86207808977 is 77980870268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51119401216 + 35088407761 = 226096^2 + 187319^2 .

It is a cyclic number.

It is not a de Polignac number, because 86207808977 - 2⁶ = 86207808913 is a prime.

It is a super-2 number, since 2×86207808977² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86207808937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43103904488 + 43103904489.

It is an arithmetic number, because the mean of its divisors is an integer number (43103904489).

Almost surely, 2^86207808977 is an apocalyptic number.

It is an amenable number.

86207808977 is a deficient number, since it is larger than the sum of its proper divisors (1).

86207808977 is an equidigital number, since it uses as much as digits as its factorization.

86207808977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18966528, while the sum is 62.

The spelling of 86207808977 in words is "eighty-six billion, two hundred seven million, eight hundred eight thousand, nine hundred seventy-seven".