1119965783861 has 2 divisors, whose sum is σ = 1119965783862. Its totient is φ = 1119965783860.

The previous prime is 1119965783819. The next prime is 1119965783921. The reversal of 1119965783861 is 1683875699111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 682622964100 + 437342819761 = 826210^2 + 661319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1119965783861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1119965788861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559982891930 + 559982891931.

It is an arithmetic number, because the mean of its divisors is an integer number (559982891931).

Almost surely, 2^{1119965783861} is an apocalyptic number.

It is an amenable number.

1119965783861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1119965783861 is an equidigital number, since it uses as much as digits as its factorization.

1119965783861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 65.

The spelling of 1119965783861 in words is "one trillion, one hundred nineteen billion, nine hundred sixty-five million, seven hundred eighty-three thousand, eight hundred sixty-one".