11811582892061 has 2 divisors, whose sum is σ = 11811582892062. Its totient is φ = 11811582892060.

The previous prime is 11811582892009. The next prime is 11811582892069. The reversal of 11811582892061 is 16029828511811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11780854905625 + 30727986436 = 3432325^2 + 175294^2 .

It is a cyclic number.

It is not a de Polignac number, because 11811582892061 - 2²² = 11811578697757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11811582891994 and 11811582892012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11811582892069) 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, 5905791446030 + 5905791446031.

It is an arithmetic number, because the mean of its divisors is an integer number (5905791446031).

Almost surely, 2^{11811582892061} is an apocalyptic number.

It is an amenable number.

11811582892061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11811582892061 is an equidigital number, since it uses as much as digits as its factorization.

11811582892061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 53.

The spelling of 11811582892061 in words is "eleven trillion, eight hundred eleven billion, five hundred eighty-two million, eight hundred ninety-two thousand, sixty-one".