11605549998473 has 2 divisors, whose sum is σ = 11605549998474. Its totient is φ = 11605549998472.

The previous prime is 11605549998463. The next prime is 11605549998479. The reversal of 11605549998473 is 37489994550611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10641603049609 + 963946948864 = 3262147^2 + 981808^2 .

It is a cyclic number.

It is not a de Polignac number, because 11605549998473 - 2¹² = 11605549994377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11605549998397 and 11605549998406.

It is not a weakly prime, because it can be changed into another prime (11605549998479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5802774999236 + 5802774999237.

It is an arithmetic number, because the mean of its divisors is an integer number (5802774999237).

Almost surely, 2^{11605549998473} is an apocalyptic number.

It is an amenable number.

11605549998473 is a deficient number, since it is larger than the sum of its proper divisors (1).

11605549998473 is an equidigital number, since it uses as much as digits as its factorization.

11605549998473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 293932800, while the sum is 71.

The spelling of 11605549998473 in words is "eleven trillion, six hundred five billion, five hundred forty-nine million, nine hundred ninety-eight thousand, four hundred seventy-three".