1555200000002 has 24 divisors (see below), whose sum is σ = 2589539751036. Its totient is φ = 699909980000.

The previous prime is 1555199999999. The next prime is 1555200000019. The reversal of 1555200000002 is 2000000025551.

1555200000002 = 719999² + 720000² + 720001².

It can be written as a sum of positive squares in 2 ways, for example, as 963163625281 + 592036374721 = 981409^2 + 769439^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1555200000002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31789649 + ... + 31838532.

Almost surely, 2^{1555200000002} is an apocalyptic number.

1555200000002 is a deficient number, since it is larger than the sum of its proper divisors (1034339751034).

1555200000002 is a wasteful number, since it uses less digits than its factorization.

1555200000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63628306 (or 63628295 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

Adding to 1555200000002 its reverse (2000000025551), we get a palindrome (3555200025553).

The spelling of 1555200000002 in words is "one trillion, five hundred fifty-five billion, two hundred million, two", and thus it is an aban number.