609987554289 has 9 divisors (see below), whose sum is σ = 881096518393. Its totient is φ = 406656807492.

The previous prime is 609987554279. The next prime is 609987554291. The reversal of 609987554289 is 982455789906.

The square root of 609987554289 is 781017.

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

609987554289 is a `hidden beast` number, since 6 + 0 + 9 + 9 + 8 + 75 + 542 + 8 + 9 = 666.

609987554289 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 609987554289 - 2⁵ = 609987554257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609987554279) 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, 2212882 + ... + 2473220.

Almost surely, 2^609987554289 is an apocalyptic number.

609987554289 is the 781017-th square number.

609987554289 is the 390509-th centered octagonal number.

It is an amenable number.

609987554289 is a deficient number, since it is larger than the sum of its proper divisors (271108964104).

609987554289 is an frugal number, since it uses more digits than its factorization.

609987554289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520684 (or 260342 counting only the distinct ones).

The product of its (nonzero) digits is 391910400, while the sum is 72.

The spelling of 609987554289 in words is "six hundred nine billion, nine hundred eighty-seven million, five hundred fifty-four thousand, two hundred eighty-nine".