86946525661 has 2 divisors, whose sum is σ = 86946525662. Its totient is φ = 86946525660.

The previous prime is 86946525643. The next prime is 86946525671. The reversal of 86946525661 is 16652564968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86806836900 + 139688761 = 294630^2 + 11819^2 .

It is a cyclic number.

It is not a de Polignac number, because 86946525661 - 2³³ = 78356591069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86946525596 and 86946525605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86946525671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43473262830 + 43473262831.

It is an arithmetic number, because the mean of its divisors is an integer number (43473262831).

Almost surely, 2^86946525661 is an apocalyptic number.

It is an amenable number.

86946525661 is a deficient number, since it is larger than the sum of its proper divisors (1).

86946525661 is an equidigital number, since it uses as much as digits as its factorization.

86946525661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18662400, while the sum is 58.

The spelling of 86946525661 in words is "eighty-six billion, nine hundred forty-six million, five hundred twenty-five thousand, six hundred sixty-one".