2155504012304 has 20 divisors (see below), whose sum is σ = 4191151271100. Its totient is φ = 1073916587520.

The previous prime is 2155504012301. The next prime is 2155504012357. The reversal of 2155504012304 is 4032104055512.

It can be written as a sum of positive squares in 2 ways, for example, as 1870198472704 + 285305539600 = 1367552^2 + 534140^2 .

It is not an unprimeable number, because it can be changed into a prime (2155504012301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239709029 + ... + 239718020.

It is an arithmetic number, because the mean of its divisors is an integer number (209557563555).

Almost surely, 2^{2155504012304} is an apocalyptic number.

It is an amenable number.

2155504012304 is a deficient number, since it is larger than the sum of its proper divisors (2035647258796).

2155504012304 is a wasteful number, since it uses less digits than its factorization.

2155504012304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479427338 (or 479427332 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 2155504012304 its reverse (4032104055512), we get a palindrome (6187608067816).

The spelling of 2155504012304 in words is "two trillion, one hundred fifty-five billion, five hundred four million, twelve thousand, three hundred four".