1010505560989 has 2 divisors, whose sum is σ = 1010505560990. Its totient is φ = 1010505560988.

The previous prime is 1010505560969. The next prime is 1010505561017. The reversal of 1010505560989 is 9890655050101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 658313163225 + 352192397764 = 811365^2 + 593458^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010505560989 - 2⁷ = 1010505560861 is a prime.

It is a super-2 number, since 2×1010505560989² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010505560969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505252780494 + 505252780495.

It is an arithmetic number, because the mean of its divisors is an integer number (505252780495).

Almost surely, 2^{1010505560989} is an apocalyptic number.

It is an amenable number.

1010505560989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010505560989 is an equidigital number, since it uses as much as digits as its factorization.

1010505560989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486000, while the sum is 49.

The spelling of 1010505560989 in words is "one trillion, ten billion, five hundred five million, five hundred sixty thousand, nine hundred eighty-nine".