2155334023204 has 12 divisors (see below), whose sum is σ = 3771854822428. Its totient is φ = 1077661216800.

The previous prime is 2155334023187. The next prime is 2155334023217. The reversal of 2155334023204 is 4023204335512.

It can be written as a sum of positive squares in 2 ways, for example, as 463695626304 + 1691638396900 = 680952^2 + 1300630^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2155334023204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549867 + ... + 2147794.

Almost surely, 2^{2155334023204} is an apocalyptic number.

It is an amenable number.

2155334023204 is a deficient number, since it is larger than the sum of its proper divisors (1616520799224).

2155334023204 is a wasteful number, since it uses less digits than its factorization.

2155334023204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897406 (or 2897404 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 2155334023204 its reverse (4023204335512), we get a palindrome (6178538358716).

The spelling of 2155334023204 in words is "two trillion, one hundred fifty-five billion, three hundred thirty-four million, twenty-three thousand, two hundred four".