11430165555 has 20 divisors (see below), whose sum is σ = 20489630832. Its totient is φ = 6096088080.

The previous prime is 11430165503. The next prime is 11430165581. The reversal of 11430165555 is 55556103411.

11430165555 is a `hidden beast` number, since 1 + 1 + 43 + 0 + 1 + 65 + 555 = 666.

11430165555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11430165555 - 2¹² = 11430161459 is a prime.

It is a super-2 number, since 2×11430165555² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14110911 + ... + 14111720.

Almost surely, 2^11430165555 is an apocalyptic number.

11430165555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11430165555 is a deficient number, since it is larger than the sum of its proper divisors (9059465277).

11430165555 is an equidigital number, since it uses as much as digits as its factorization.

11430165555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28222648 (or 28222639 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

Adding to 11430165555 its reverse (55556103411), we get a palindrome (66986268966).

The spelling of 11430165555 in words is "eleven billion, four hundred thirty million, one hundred sixty-five thousand, five hundred fifty-five".