1550854280889 has 9 divisors (see below), whose sum is σ = 2240128246629. Its totient is φ = 1033900363260.

The previous prime is 1550854280849. The next prime is 1550854280893. The reversal of 1550854280889 is 9880824580551.

The square root of 1550854280889 is 1245333.

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

1550854280889 is a `hidden beast` number, since 1 + 5 + 5 + 0 + 8 + 542 + 8 + 0 + 8 + 89 = 666.

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

It is not a de Polignac number, because 1550854280889 - 2¹⁹ = 1550853756601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1550854280849) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3528444 + ... + 3943554.

Almost surely, 2^{1550854280889} is an apocalyptic number.

1550854280889 is the 1245333-rd square number.

1550854280889 is the 622667-th centered octagonal number.

It is an amenable number.

1550854280889 is a deficient number, since it is larger than the sum of its proper divisors (689273965740).

1550854280889 is an frugal number, since it uses more digits than its factorization.

1550854280889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830228 (or 415114 counting only the distinct ones).

The product of its (nonzero) digits is 36864000, while the sum is 63.

The spelling of 1550854280889 in words is "one trillion, five hundred fifty billion, eight hundred fifty-four million, two hundred eighty thousand, eight hundred eighty-nine".