9554398458361 has 3 divisors (see below), whose sum is σ = 9554401549381. Its totient is φ = 9554395367342.

The previous prime is 9554398458337. The next prime is 9554398458377. The reversal of 9554398458361 is 1638548934559.

The square root of 9554398458361 is 3091019.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 9554398458361 - 2¹¹ = 9554398456313 is a prime.

It is a super-2 number, since 2×9554398458361² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9554398458161) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1545510 + ... + 4636528.

Almost surely, 2^{9554398458361} is an apocalyptic number.

9554398458361 is the 3091019-th square number.

9554398458361 is the 1545510-th centered octagonal number.

It is an amenable number.

9554398458361 is a deficient number, since it is larger than the sum of its proper divisors (3091020).

9554398458361 is an frugal number, since it uses more digits than its factorization.

9554398458361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6182038 (or 3091019 counting only the distinct ones).

The product of its digits is 559872000, while the sum is 70.

The spelling of 9554398458361 in words is "nine trillion, five hundred fifty-four billion, three hundred ninety-eight million, four hundred fifty-eight thousand, three hundred sixty-one".