1065555545999 has 6 divisors (see below), whose sum is σ = 1239523798464. Its totient is φ = 913333325100.

The previous prime is 1065555545933. The next prime is 1065555546001. The reversal of 1065555545999 is 9995455555601.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1065555545999 is a prime.

It is a super-2 number, since 2×1065555545999² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065555545909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10873015727 + ... + 10873015824.

It is an arithmetic number, because the mean of its divisors is an integer number (206587299744).

Almost surely, 2^{1065555545999} is an apocalyptic number.

1065555545999 is a deficient number, since it is larger than the sum of its proper divisors (173968252465).

1065555545999 is an equidigital number, since it uses as much as digits as its factorization.

1065555545999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21746031565 (or 21746031558 counting only the distinct ones).

The product of its (nonzero) digits is 273375000, while the sum is 68.

The spelling of 1065555545999 in words is "one trillion, sixty-five billion, five hundred fifty-five million, five hundred forty-five thousand, nine hundred ninety-nine".