1235505610089 has 9 divisors (see below), whose sum is σ = 1784624031229. Its totient is φ = 823668183660.

The previous prime is 1235505610063. The next prime is 1235505610099. The reversal of 1235505610089 is 9800165055321.

The square root of 1235505610089 is 1111533.

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

1235505610089 is a `hidden beast` number, since 1 + 2 + 3 + 5 + 5 + 0 + 561 + 0 + 0 + 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 1235505610089 - 2¹⁵ = 1235505577321 is a prime.

It is a super-2 number, since 2×1235505610089² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235505610099) 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, 3149344 + ... + 3519854.

Almost surely, 2^{1235505610089} is an apocalyptic number.

1235505610089 is the 1111533-rd square number.

1235505610089 is the 555767-th centered octagonal number.

It is an amenable number.

1235505610089 is a deficient number, since it is larger than the sum of its proper divisors (549118421140).

1235505610089 is an frugal number, since it uses more digits than its factorization.

1235505610089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741028 (or 370514 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 1235505610089 in words is "one trillion, two hundred thirty-five billion, five hundred five million, six hundred ten thousand, eighty-nine".