1161873122461 has 2 divisors, whose sum is σ = 1161873122462. Its totient is φ = 1161873122460.

The previous prime is 1161873122369. The next prime is 1161873122467. The reversal of 1161873122461 is 1642213781611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 821435881561 + 340437240900 = 906331^2 + 583470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161873122461 - 2¹¹ = 1161873120413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161873122467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580936561230 + 580936561231.

It is an arithmetic number, because the mean of its divisors is an integer number (580936561231).

Almost surely, 2^{1161873122461} is an apocalyptic number.

It is an amenable number.

1161873122461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161873122461 is an equidigital number, since it uses as much as digits as its factorization.

1161873122461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The spelling of 1161873122461 in words is "one trillion, one hundred sixty-one billion, eight hundred seventy-three million, one hundred twenty-two thousand, four hundred sixty-one".