10320583661 has 2 divisors, whose sum is σ = 10320583662. Its totient is φ = 10320583660.

The previous prime is 10320583657. The next prime is 10320583729. The reversal of 10320583661 is 16638502301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7926340900 + 2394242761 = 89030^2 + 48931^2 .

It is an emirp because it is prime and its reverse (16638502301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10320583661 - 2² = 10320583657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10320589661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160291830 + 5160291831.

It is an arithmetic number, because the mean of its divisors is an integer number (5160291831).

Almost surely, 2^10320583661 is an apocalyptic number.

It is an amenable number.

10320583661 is a deficient number, since it is larger than the sum of its proper divisors (1).

10320583661 is an equidigital number, since it uses as much as digits as its factorization.

10320583661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 10320583661 in words is "ten billion, three hundred twenty million, five hundred eighty-three thousand, six hundred sixty-one".