1610532544121 has 2 divisors, whose sum is σ = 1610532544122. Its totient is φ = 1610532544120.

The previous prime is 1610532544099. The next prime is 1610532544157. The reversal of 1610532544121 is 1214452350161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1177225000000 + 433307544121 = 1085000^2 + 658261^2 .

It is a cyclic number.

It is not a de Polignac number, because 1610532544121 - 2³⁰ = 1609458802297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1610532544171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805266272060 + 805266272061.

It is an arithmetic number, because the mean of its divisors is an integer number (805266272061).

Almost surely, 2^{1610532544121} is an apocalyptic number.

It is an amenable number.

1610532544121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1610532544121 is an equidigital number, since it uses as much as digits as its factorization.

1610532544121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 1610532544121 its reverse (1214452350161), we get a palindrome (2824984894282).

The spelling of 1610532544121 in words is "one trillion, six hundred ten billion, five hundred thirty-two million, five hundred forty-four thousand, one hundred twenty-one".