410671111121561 has 2 divisors, whose sum is σ = 410671111121562. Its totient is φ = 410671111121560.

The previous prime is 410671111121533. The next prime is 410671111121603. The reversal of 410671111121561 is 165121111176014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372330792015625 + 38340319105936 = 19295875^2 + 6191956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-410671111121561 is a prime.

It is not a weakly prime, because it can be changed into another prime (410671111121501) 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, 205335555560780 + 205335555560781.

It is an arithmetic number, because the mean of its divisors is an integer number (205335555560781).

Almost surely, 2^{410671111121561} is an apocalyptic number.

It is an amenable number.

410671111121561 is a deficient number, since it is larger than the sum of its proper divisors (1).

410671111121561 is an equidigital number, since it uses as much as digits as its factorization.

410671111121561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 38.

Adding to 410671111121561 its reverse (165121111176014), we get a palindrome (575792222297575).

The spelling of 410671111121561 in words is "four hundred ten trillion, six hundred seventy-one billion, one hundred eleven million, one hundred twenty-one thousand, five hundred sixty-one".