11546345521553 has 2 divisors, whose sum is σ = 11546345521554. Its totient is φ = 11546345521552.

The previous prime is 11546345521499. The next prime is 11546345521603. The reversal of 11546345521553 is 35512554364511.

It is an a-pointer prime, because the next prime (11546345521603) can be obtained adding 11546345521553 to its sum of digits (50).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9118660562944 + 2427684958609 = 3019712^2 + 1558103^2 .

It is a cyclic number.

It is not a de Polignac number, because 11546345521553 - 2¹⁶ = 11546345456017 is a prime.

It is not a weakly prime, because it can be changed into another prime (11546345521253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5773172760776 + 5773172760777.

It is an arithmetic number, because the mean of its divisors is an integer number (5773172760777).

Almost surely, 2^{11546345521553} is an apocalyptic number.

It is an amenable number.

11546345521553 is a deficient number, since it is larger than the sum of its proper divisors (1).

11546345521553 is an equidigital number, since it uses as much as digits as its factorization.

11546345521553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400000, while the sum is 50.

The spelling of 11546345521553 in words is "eleven trillion, five hundred forty-six billion, three hundred forty-five million, five hundred twenty-one thousand, five hundred fifty-three".