11551533051017 has 2 divisors, whose sum is σ = 11551533051018. Its totient is φ = 11551533051016.

The previous prime is 11551533051011. The next prime is 11551533051061. The reversal of 11551533051017 is 71015033515511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9917561414656 + 1633971636361 = 3149216^2 + 1278269^2 .

It is a cyclic number.

It is not a de Polignac number, because 11551533051017 - 2¹⁶ = 11551532985481 is a prime.

It is not a weakly prime, because it can be changed into another prime (11551533051011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5775766525508 + 5775766525509.

It is an arithmetic number, because the mean of its divisors is an integer number (5775766525509).

Almost surely, 2^{11551533051017} is an apocalyptic number.

It is an amenable number.

11551533051017 is a deficient number, since it is larger than the sum of its proper divisors (1).

11551533051017 is an equidigital number, since it uses as much as digits as its factorization.

11551533051017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39375, while the sum is 38.

Adding to 11551533051017 its reverse (71015033515511), we get a palindrome (82566566566528).

The spelling of 11551533051017 in words is "eleven trillion, five hundred fifty-one billion, five hundred thirty-three million, fifty-one thousand, seventeen".