1081761767197 has 2 divisors, whose sum is σ = 1081761767198. Its totient is φ = 1081761767196.

The previous prime is 1081761767173. The next prime is 1081761767237. The reversal of 1081761767197 is 7917671671801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1052318982276 + 29442784921 = 1025826^2 + 171589^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081761767197 - 2⁷ = 1081761767069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1081761767167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540880883598 + 540880883599.

It is an arithmetic number, because the mean of its divisors is an integer number (540880883599).

Almost surely, 2^{1081761767197} is an apocalyptic number.

It is an amenable number.

1081761767197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081761767197 is an equidigital number, since it uses as much as digits as its factorization.

1081761767197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6223392, while the sum is 61.

The spelling of 1081761767197 in words is "one trillion, eighty-one billion, seven hundred sixty-one million, seven hundred sixty-seven thousand, one hundred ninety-seven".