1162196667781 has 2 divisors, whose sum is σ = 1162196667782. Its totient is φ = 1162196667780.

The previous prime is 1162196667761. The next prime is 1162196667839. The reversal of 1162196667781 is 1877666912611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1154623317156 + 7573350625 = 1074534^2 + 87025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1162196667781 is a prime.

It is a super-2 number, since 2×1162196667781² (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 (1162196667761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581098333890 + 581098333891.

It is an arithmetic number, because the mean of its divisors is an integer number (581098333891).

Almost surely, 2^{1162196667781} is an apocalyptic number.

It is an amenable number.

1162196667781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1162196667781 is an equidigital number, since it uses as much as digits as its factorization.

1162196667781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 61.

The spelling of 1162196667781 in words is "one trillion, one hundred sixty-two billion, one hundred ninety-six million, six hundred sixty-seven thousand, seven hundred eighty-one".