9554773568401 has 2 divisors, whose sum is σ = 9554773568402. Its totient is φ = 9554773568400.

The previous prime is 9554773568383. The next prime is 9554773568407. The reversal of 9554773568401 is 1048653774559.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8358320437776 + 1196453130625 = 2891076^2 + 1093825^2 .

It is a cyclic number.

It is not a de Polignac number, because 9554773568401 - 2¹¹ = 9554773566353 is a prime.

It is not a weakly prime, because it can be changed into another prime (9554773568407) 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, 4777386784200 + 4777386784201.

It is an arithmetic number, because the mean of its divisors is an integer number (4777386784201).

Almost surely, 2^{9554773568401} is an apocalyptic number.

It is an amenable number.

9554773568401 is a deficient number, since it is larger than the sum of its proper divisors (1).

9554773568401 is an equidigital number, since it uses as much as digits as its factorization.

9554773568401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008000, while the sum is 64.

The spelling of 9554773568401 in words is "nine trillion, five hundred fifty-four billion, seven hundred seventy-three million, five hundred sixty-eight thousand, four hundred one".