1155550330433 has 4 divisors (see below), whose sum is σ = 1223523879300. Its totient is φ = 1087576781568.

The previous prime is 1155550330423. The next prime is 1155550330463. The reversal of 1155550330433 is 3340330555511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 964190452624 + 191359877809 = 981932^2 + 437447^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155550330433 - 2⁶ = 1155550330369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155550330423) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 33986774408 + ... + 33986774441.

It is an arithmetic number, because the mean of its divisors is an integer number (305880969825).

Almost surely, 2^{1155550330433} is an apocalyptic number.

It is an amenable number.

1155550330433 is a deficient number, since it is larger than the sum of its proper divisors (67973548867).

1155550330433 is an equidigital number, since it uses as much as digits as its factorization.

1155550330433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67973548866.

The product of its (nonzero) digits is 202500, while the sum is 38.

Adding to 1155550330433 its reverse (3340330555511), we get a palindrome (4495880885944).

The spelling of 1155550330433 in words is "one trillion, one hundred fifty-five billion, five hundred fifty million, three hundred thirty thousand, four hundred thirty-three".