8554905465129 has 9 divisors (see below), whose sum is σ = 12357098346333. Its totient is φ = 5703264460332.

The previous prime is 8554905465109. The next prime is 8554905465173. The reversal of 8554905465129 is 9215645094558.

The square root of 8554905465129 is 2924877.

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

8554905465129 is a `hidden beast` number, since 8 + 5 + 5 + 49 + 0 + 5 + 465 + 129 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is a de Polignac number, because none of the positive numbers 2^k-8554905465129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8554905465109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8287152 + ... + 9262110.

Almost surely, 2^{8554905465129} is an apocalyptic number.

8554905465129 is the 2924877-th square number.

8554905465129 is the 1462439-th centered octagonal number.

It is an amenable number.

8554905465129 is a deficient number, since it is larger than the sum of its proper divisors (3802192881204).

8554905465129 is an frugal number, since it uses more digits than its factorization.

8554905465129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949924 (or 974962 counting only the distinct ones).

The product of its (nonzero) digits is 77760000, while the sum is 63.

The spelling of 8554905465129 in words is "eight trillion, five hundred fifty-four billion, nine hundred five million, four hundred sixty-five thousand, one hundred twenty-nine".